Blocks reappear after mining

Realms issue that I've noticed so far, Android mobile.

I play on Win10 and this is a issue that is also occurring on a server that I play on. So it's not just effecting realms.

I'm experiencing this issue in both realms and servers on version 1.12 on Windows 10.

Possibly related is items coming back to your hand when placing in container or the other way around. Static container with no items moving in or out.

Block lag has occurred for me on servers and realms v1.12.0 of Bedrock. Any fast mining can cause this with any block, whether affected by gravity or not. Blocks can reappear in front of blocks successfully mined. Any water interactions seem to make the problem worse.

That's happening to me all the time block lag

Spent the entire evening trying to mine out a chunk and this problem was occurring the whole time with most blocks needing mined 3-4 times to actually break.  My Unbreaking III Diamond Pickaxe was worn almost all the way down after clearing 7 layers and it took 3-4 times as long to do it.  I might as well just make a bunch of iron picks and dismantle the beacon. 

This bug is nearly game-breaking and is most certainly not resolved in current version.

I've noticed it even when playing on a realm alone. It has killed insta-mine as you now have to re-mine a lot of blocks 3 times to get the game to actually remove it.

Want to replicate this bug yourself? Just take an efficiency 5 diamond shovel and go dig up some sand.

This also happens with multiplayer worlds, not only realms

This happens no matter where you are!
I've been having this problem EVEN on the overworld! Please FIX!

Horrible bug that makes mining awful. It is really a pain to play with. I can confirm that it is on Nintendo Switch. Please fix!

Happens in 1.13.0.4 also

I've seen this on my realm after this update as well. Super irritating. I saw it all over the overworld as I was trying to mine out an area with a beacon nearby.

I see have this happen all the time when mining with anything above efficiency 3

Also have this reoccurring in my multiplayer game on Xbox Bedrock Edition, mining with efficiency 5 and haste 2, or efficiency 4 on dirt, any instant mine results in blocks coming back.

Maybe related. When I manually (re)plant wheat holding down the use/place block button about 1 in 10 plants appear and then disappear. The original REALMS-1362 bug essentially describes these kinds of problems too.

I'm curious if this is being investigated, as it's borderline game breaking for me.

I think mega spud said this would be fixed in 1.13, somewhere, but probably still best to keep the support for this issue going! This kind of insane block lag really should have gotten a hotfix as soon as 1.12 released >.<

It's still happening and its quite annoying

Still affects 1.13, and is way worse now :c

This is keeping me from playing. Haven’t played in 2 months. Very upsetting. I just want to go mining. This is “Mine”craft  Right??????

1.13 and still horrendous. Working on a mountain top flatening project to place a large fortress on and having blocks reappear all the time slows down the project considerably. 

Thiis also impacts placing blocks in 1.13. 

Both mining and crafting are impaired by block lag

Ese bug aun continua, desde la 1.11 solo afectó a realm y hasta la fecha, es demasiado molesto

This is so much worse now in 1.13 than before.

It's disgusting. Hope it gets fixed fast.

I've had this happening to me when I was on a high latency network - it was more prominent when using fast tools on soft materials.

Terrible

Seems worse in the Nether

it's  on Android  too

It happened on my switch as well, on a realm that I'm a part of, and I was only digging sand with my hand. 

I play on a Bedrock Dedicated Server with extremely high specs and low latency and also experience this issue so is not limited to Realms.

this is a pretty decent quality of life issue. It happened rarely to me on version 1.12.1 but happens almost consistently for me on windows 10 and xbox one versions. mining blocks like sand or nether rock are easy to see this but it also happens to me mining stone with an efficiency pickaxe.

This happens with just plain efficiency 5 for stone (on a realm)
and it happened when I was digging dirt with my hand

I play on iOS btw

I can confirm this. It is present since 1.12

on the realm i play on just a diamond pick with no enchantments i need to mine the block 3 times

i started using iron 

my version 1.13.1 

Pleas fix this I also have experienced this bug.

I am experiencing this constantly with a haste 2 beacon & on both efficiency IV & V picks. This is in a 1.13.2 environment.

I am experiencing lot block lag all the time

Its still happening in 1.14 it actually seems worse now than it was in the previous updates. You should re-name the game Block Lag Craft since the mine part is almost impossible.

This bug has got worse with each new update and hotfix

Is this ever going to get fixed, drop everything else and work on this. This ruined the game for me. 

@XplosiveGingerX “Community Consensus” is a form of confirmation, not a lesser status.

1.14.30.51 also

Any progress on this? An update of where things are up to would be much appreciated.

This however doesn't happen when mining leaves with shears, very interesting!

Throwing my hat into the ring for this as well as a major problem. I rank this right up there with Mob de-spawning mechanics (or lack there of) as needs fixed asap. Thanks for your time.

Needs to be fixed

I mined a nether tunel and boom, I was inside invisible blocks that I couldn't mine because they just regenerated. The next thing I know is that all my stuff, is on the nether roof

I would love to see this issue fixed! Definitely ruins instant mining with a beacon or in the nether.

It's so bad with just efficiency 5 that I don't even want to get a beacon because I'm afraid that its gonna be even worse D:
If this got fixed in 1.15 that would be absolutely amazing! I rank this bug as number 1 most painful/annoying/infuriating on Bedrock Edition right now. 

Agreed

This is absolute murder on my tool durability. We should all receive a complimentary set of netherite tools when this gets fixed. 

I’ve noticed it a lot more with 1.14.32.1 alpha server playing on an ipad with green connection.  If you don’t hear the break sound, i’ve just stopped walking and the blocks will fill back in.  If you don’t, the blocks just lock you in and you suffocate unless you mine out quickly.

Hi all,

I appreciate that this was in Silent's recent bug video and its great to see people getting involved, however please try to keep comments to new and important information only. Each comment sends an email out to the ~80 community members watching this tickets for updates.

While we wait for a fix though, if you want to discuss active bugs, please head over to the MoJIRA discord server! Many of the volunteers here are there as well as a bunch of the community to discuss everything bug related!

Ionic

This effects 1.15.0.56 beta. Except on the beta the blocks go invisible(you can suffocate by walking into, if you place a block within or relog they reappear)

• Here is a video showing this bug in the latest beta: video
  edit: drive is still prossesing... should be viewable in a couple of hours(typed at 9:39 central time, on 3-13-30)

Hi Aaron,

If you could add detail on how you caused the behavior shown in your video it would help immensely. Just on first glance your issue isn't the one directly mentioned by the bug report (block reappearing when mining quickly with something like eff5) but your issue may relate to the fix put in place.

If you could add repro steps so Mojang can investigate it would be very much appreciated.

Ionic

I simply mined lots of blocks with efficiency 5 diamond pick on my world which runs at a low frame rate on the beta

@Aaron sacks I don’t think your video is related to this bug. Your video shows a constant server time >300, which means the game server is taking >6x as long to process each game tick as a tick should take in real time. That is going to affect everything you do, not just mining, because the game is simply not able to keep up with your actions. It is possible the lag you experience is due to a bug, but we don’t have enough information to determine if that is the case. If you could show that server time is normal before mining blocks and elevates drastically specifically from mining blocks, then we might have reason to think it is related to this bug.

The issue shown by Aaron sack's video is being tracked at MCPE-65291 and I have added a link to the video there.

this bug (block lag) happens on all platforms 

Update video recorded today in Minecraft 1.14.60.5 showing unbreaking with a haste 2 beacon and block lag.
Hopefully you find this useful in resolving this issue.

https://www.youtube.com/watch?v=rnUUZBxqgzo

Please review this issue and the video slack lizard sent to you. I dont believe enough attention has been given to it.

This is really game breaking for many people!! Fix it please

Highlight clip from stream Unbreaking on Elytra impeding single rocket takeoff and Unbreaking on Efficiency 5 pickaxe. https://www.twitch.tv/videos/645737558 

World is a Bedrock Server.

does this issue also relate with mending? If not,we could have a fix right there(also,for those who don't have it,you can get it from librarians).

Pinpontmold$ mending doesn't check when mining, that is tied to how experience points are gathered and divided up between tools, gear, and experience bar. We are suspecting that the unbreaking check is overriding the block breaking check in the games code, as the way unbreaking is supposed to work is for every block broken there is a 25% chance for Unbreaking 3 to take 1 point of durability damage, as how it is written on the Wiki here https://minecraft.gamepedia.com/Unbreaking . We aren't sure why the blocks reappear (1.14.6) or there are phantom blocks (1.16.0 Beta). We just know with our testing there is correlation when mining with Efficiency 5, Unbreaking 3, and Haste 2 beacon effect the "block lag" is easily recreated.

Resolving issues that were marked as fixed in the 1.15 and 1.16 Betas, now that 1.16.0 is being released.

Good thing Mojang is reading the comments. lol

This is not fixed in 1.16, and needs to be reopened.

Reopened for review.

This is still occurring on my 1.16 realm. Not fixed with the 1.16 release.

I have that too and I have advice:
Let the block stand after you mine it for 2 seconds.
Then it should disappear

still occurs in 1.16.1 😞 realms

just like the other comments say it only occurs with tools using unbreaking in my experience

Mostly fixed in 1.16. Still need a bit more work though.

Still not fixed on Windows 10 1.16.1

Mojang, please kill all the bugs!

hmmm yes this normally happens to me when the game is lagging more than normal and usually fixes itself after a few seconds for me

It's happening to me on my realms but only if I use ESBE 2G shaders. I was breaking crops and it started reapearing. Maybe because the shaders demand a little bit more of my game idk. When I'm not using it the blocks don't reapear

This is caused by unbreaking and also unbreaking causes flight lag for elytra

Enzo, all shaders and texture packs are client side, not server. Block lag/ghost blocks/reappearing blocks is tied to a mismatch between client block data and server block data. Many of us in the community have tested identical runs of Unbreaking vs no Unbreaking to come to this result. The ghost blocks that cause "random" suffocation damage reload once player logs back in. As shown here in FoxyNoTail's Beta video https://youtu.be/SKU_MHwZop8

This only happens with Unbreaking 3 now, which is odd. But without that enchantment it’s gone.

Its been 13 months, when will this be high priority?

yea im getting on update 1.16.2 even worse now it wasnt that bad on 1.16

 Do hope this gets fixed soon, I would love to put unbreaking on my tools again.

Still happening would love to see this fixed. Go mojang!

Confirmed in 1.16.100.60.

Does this only happen with Unbreaking 3 or all Unbreaking levels?

Affects 1.16.100

I can confirm on my 1.16.100 server. The more efficiency & haste, the worse it seems to be.

Please Note this bug is still affecting all tools using the Unbreaking Enchantment as of 1.16.100. If Unbreaking is removed from the tool in question instant mine and mining in general is possible without block lag on all levels. Please correct this, this issue makes doing a core part of the game incredibly frustrating.

This doesn't just happen in Realms, it also happens in multiplayer games (like when you join a friend's world). It's very annoying, so please get it fixed soon! (also I'm on Windows 10 in version 1.16.100)

This affects 1.16.200.

Block lag is alive and well with Umbreaking tools. 

After testing a bit, on a server and a realm, mining ore blocks that do not drop themselves naturally (i.e. nether quartz, diamond ore) and crops including nether wart all have a chance to reappear regardless of unbreaking status, so having unbreaking 1-3 would be the same when mining these blocks as when it is absent from a tool. Moreover, this can also happen in these ore blocks even if the player is using a vanilla, unenchanted tool. This does not appear to be a problem in offline play. Additionally, planting crops in rapid succession also causes the crop to disappear at random while still being in the player's inventory (this applies to nether wart as well).

Please fix this bug, insta mining is painfull with haste 2 efficency 5 beacon 

Happens in 1.16.201 hotfix.

1.16.201 on realms too.

@AM71113363 while I agree that connection speed might have something to do with this in some cases, it seems odd that everyone's connections were fine up until about a year and a half ago. From personal experience, this has happened to me playing on a server running on the same computer I was playing on, reducing connection speed to basically nothing. That being said, the fact that it started happening all of a sudden in 1.12.0 does possibly suggest something changed with how multiplayer games communicated with the clients, especially when multiple packets are being transferred within a short span (either quickly due to insta-mine/fast block placing, or double due to the server telling the client whether unbreaking was used). I didn't see anything that stood out in the 1.12.0 changelog that seems related to this, but does anyone know of changes around that time with multiplayer games "talking" to each other in a way that these packets could get lost that they didn't before?

@AM71113363 I can confirm that this happens on my local server (running Bedrock Dedicated Server) which I am connecting to via 1GB LAN with <1ms latency. I agree that it could be packet loss, but I do not see lost packets on my local network. Perhaps the UDP packets are being replayed in the wrong order on the server? Hard to say without seeing the code.

This happens to me even in a single-player world. Usually makes me take suffocation damage but the damage is not too bad. What's really bad is that you cannot sprint-dig straight without stopping.

I have this same issue playing bedwars

My friends and i uploaded a single-player world to realms about a week ago. We had no problems on the realm for the first two days, but then the block-lagg started almost unnoticably on the third day of uptime. And in the two days since, the issue has been steadily getting worse. at current, all three of us are having trouble with everything from blocks reappearing when mined (especcialy while mining neatherrack. But also in the overworld. And yes, we've been using unbreaking since before uploading the world to realms. No beacons), chunks taking ages to load in (to the point where Elytra is almost unusable), portals taking ages to go through, having trouble eating food and mobs more or less freezing in place. We haven't had many crashes though. We also tried downloading and re-uploading the world today, but to no avail. if anything, it seemed to get worse. Bare in mind that all three of us get's impacted by this in the same way, at exactly the same time.

  As for the technical info. Our admin plays on a PS5, and us other two are on base PS4s.

  All three of us are on different connections, from different providers. i myself have a fiberoptic connection with a MINIMUM of 30 mbps up/down at any given time.

  For the sake of this comment, and trying to gather the highest amount information i could. I ran a packet loss test with packet sizes of 2440 to 2456 bytes at 70 pings per sec. For a duration of 60 sec, with an acceptable delay of 50 milliseconds. With the server distance being Norway to Georgia(the Middle-Eastern country, not the state). I know this test is unneccesarily intense, but i did it for the sake of argument and troubleshooting the worst case scenario.

I had 0% packet loss up/down and had an average latency of 135.59ms and average jitter of 28.19ms. wich in my understanding is beyond good, when connecting to a server halfway around the world. so if packet loss is the issue, it's server-side.

Hope this info can shed light on and help fix the problem.

This bug has been around for a long time. Could Mojang just change unbreaking to add additional durability to tools instead of the game rolling a virtual dice to see if unbreaking triggers and doesn't reduce durability? The mechanics of unbreaking are too complicated and this bug has been around for too long. A simple increase to overall durability when enchanted with unbreaking would fix this. 

I can confirm its still on 1.16.201 and iam playing multiplayer with my friends

This issue has been fixed in the Beta release. We are waiting for it to propagate into the regular release. That will probably happen in the next regular update, although no exact date can be given.

Whoopsie! I didn't notice that fix was for an earlier Beta version. It may have been a partial fix that went into 1.16 release, but there must still be one or more outstanding issues. Let me see if I can get an update.

I have received an answer from Mojang. They are aware of how widespread this issue's effect is and are still hard at work on it. There are "larger underlying features still being worked on", which to me, based on my experience as a software developer, sounds like the kind of problem that requires a staged fix over several releases. That would explain why we saw a (partial) fix in a Beta version but the full fix is taking a while.

In case this needs it, unbreaking is for sure the underlying factor here, but also mending. Whenever the tool mines a block, but doesn't lose any durability (either from unbreaking activating, or from mending repairing it) the block will reappear. However, this doesn't just effect mining. When you are repairing broken tools using mending, trying to open chest or other actions will be cancelled whenever the tool gains durability.

Its very easy to test this too, in fact.

When playing on any world (esp with high ping) tools with unbreaking 3 (or any level of unbreaking) will have significant amounts of block lag. Using tools without unbreaking, doesn't result any block lag.

Mining things that drop EXP (like redstone ore) will still result in block lag if the tool has mending, even if the tool doesn't have unbreaking.
-Having unbreaking and mending while also mining things that drop exp, results in huge amounts of block lag.

Repairing items using mending (no unbreaking enchant) will cancel other actions, such as opening containers. You will need a constant stream of EXP to notice this, such as a guardian farm or commands summoning EXP orbs.

This likely doesn't just affect tools, but also armor and anything else in the game that can be enchanted with unbreaking/mending. Further testing would be needed to see the full affects of the bugs with these enchantments.

This bug: MCPE-114259 may be related to this one

This bug appears to be happening full swing again with the 1.17 update. I find that whenever I gain experience from mining blocks like coal or redstone when I pick up the dropped experience the block reappears as if the experience collection cancelled out the mining action. I do have unbreaking 3 on my axe and haven't tested it without yet so I don't know if the work around still works. But this bug did appear to be fixed by the end of 1.16 but now it's back in full swing.

This bug still persists even in the 1.17.2 Hotfix.

What I have noticed so far, is similar to what silentwisperer commented.
Blocks reappear whenever:

• Your unbreaking enchantment goes off at the same time as you break a block

• Your mending enchantment goes off at the same time as you break a block

• You pick up a block at the same time as you break a block

• You gain experience at the same time as you break a block

• You break sand as another sand block is falling (gravel too)

This only happens on realms from what I have seen.

Basically, the cause of the blocks reappearing is that whenever 2 things happen at once, the game just doesn't want to accept it. This could be because of ticks, and the limited ticks that realms has? If that's the case, then it could also explain why there sometimes is random blocklag, since there's multiple people playing at once it isn't difficult to have 2 players do something that causes a block update or something like that at the same time. I honestly have no ideas as to how to fix it, other than maybe looking at how Java edition does it?

Any information from developers regarding this issue??

No. In general, if we have such information we share it without being asked, but we normally don't have it as we don't have access to Mojang's internal systems or the developers themselves. (Please review our Guidelines. Comments should be limited to providing new information for the developers. Questions like this are considered off-topic and are normally removed without a reply as they scatter the useful information Mojang needs to understand the problem.)

This is happening to me too on the latest version on my Bedrock Alpha Server. The server is running on Ubuntu. Lowering the tick simulation distance and render distance settings on the server itself seemed to help a little bit, but the issue remains. I have also started messing with the compression threshold.

If the fix is good, thanks for getting it done Mojang!

This is not fixed lol, do you need video example?..

This appears to be fixed in 1.18.0.22 on single-player worlds.

Still happening in 1.17.40. This should be reopened again.