Breaking blocks with any tool that has the unbreaking enchantment creates ghost blocks on the remote client causing suffocation and death whilst mining, digging and other activities.
Please see this video for details: https://youtu.be/SKU_MHwZop8
When playing on a vanilla single player world with a friend, any blocks broken using a tool with the unbreaking enchantment causes blocks to appear broken on the remote client, but locally the block still exists causing the remote player to take suffocation damage and die whilst inside blocks they cannot see.
The level of unbreaking determines the level of the issue.
I believe this is tied to the unbreaking enchantments "random chance" to take damage during use.
When the random chance chooses for the tool to not lose durability, the block breaking data is not sent to the local client and therefore the block does not break.
This works with pickaxes, shovels, axes, hoes enchanted with unbreaking.
Efficiency or Haste does not make a difference.
Related issues
duplicates
Comments
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This isn’t only a problem to multiplayer, I have this issue in my single player world, it ruins the game experience. We can’t let mojang release the update with this bug, truly bedrock would be no more, mining would truly be like mining bedrock blocks
[Mod] OcelotOnesie
Thank you for your report!
We're actually already tracking this issue at MCPE-65291, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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foxynotail
Thanks for your quick response, but this is not the same bug at all. It's a completely different scenario.
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@foxy no-tail I believe this and MCPE-65291 are the same bug... we don’t know what caused MCPE-65291 and this might be it... the result of the bug is identical
migrated
MCPE-65291 says nothing about unbreaking being a probable contributor to this bug, are all duplicates reviewed by developers for this type of info or should this info be added to MCPE-65291?
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Yes you should probobly add this to the other bug report... idk if devs check duplicates but it gets a higher chance of being seen, which will make it easier to fix for the devs
CornerHard
Thanks for the report, Foxy! Our internal bug for 65291 also covers this scenario.
[Mod] Umija5895M
I know this is logged as a duplicate, and it might be. However I have found that the original block lag issue MCPE-48914 is definitely related to having Efficiency enchantment. If I use an Efficiency V diamond pickaxe without Unbreaking I can insta-mine netherrack while sprinting (don't need beacon). If I have Unbreaking III on the pick I get block lag all the time.
Thank You For Posting The Video