Realm frequently freezes and rolls back to previous save when log out

I am experiencing the same issue. I log into my realm and it is back to the same point every time. My sheep/cows/llamas have despawned. I can interact with chest for about a minute, but at some point they stop opening. After I log out and try to join again, I can't until I come back later on, at which point the cycle restarts. This is the third day this has been happening. Will I receive a refund, or extension of my realm? I pay for this service and it is currently unusable.

Just checked if I could play while away from my sugarcane farm. Everything seemed fine until I got closer to the sugar cane plants. Possible correlation?

Also not sure if this is related, but my realm worked just fine before I made a nether portal. All this started happening after doing some stuff in the nether, ie. making rail line to a different area, and mining for ancient debris.

I'm having the same issue. My game world I created, loads but nothing can be interacted with. I can open a chest but it wont close. I can climb up scaffolding, but can't get down a gain. Then after about 30 seconds or so the game closes and then i get a "disconnected from Server" message. After multiple tries to relog in, it happens again. And in some instances now, the entire ground has disappeared before it crashes with the same server error message.

I logged out at our gold farm (which was off) near a large village. Afterwards, whenever I tried to log onto the realm, it would load to the point where it says it is "generating the world" and then either disconnects immediately or disconnects the second my avatar is visible.

I downloaded the realm and tried it on SP. It does not disconnect, but it might periodically crash the game while playing. I loaded a backup into a second world, from before the disconnects happened, and it worked fine. But, testing showed that the village/gold farm has a high chance of recreating the issue.

So far, no one else in our realm is affected. One person logged in to check the realm and it seems, aside from what I am experiencing, it is perfectly fine.

Edit:
The basement of the gold farm, where this issue seems to trigger, has a portal to the nether.

Edit 2:
Prior to this, when the XP glitch was reintroduced, our players had issues with signs and nametags. The text on signs would often disappear after being written and when this occurs nametags refuse to keep their renames (but still eat levels and anvils).

We have been having a similar issue. It happens after a couple of minutes of normal gameplay. Randomly you are unable to open chests, open inventory or collect resources. When this happens the game will crash within a 15 seconds and kick you from the world.

When you rejoin the realm you will be reverted back to the old save.

Sometimes you are unable to join the realm at all.

It seems to get stuck on the "gathering resources" screen but won't go any further.

This joining issue however seems to resolve itself. We have been waiting around an hour and then trying to rejoin. This seems to work and we are able to rejoin.

Unfortunately for a realm that we pay for it isn't an ideal situation.

Hopefully it will be fixed soon

Would just like to add info to the Post from what we have experienced, i play on the Same realm as chanialt.

We just spent a few hours with an offline copy of the world troubleshooting. We removed all sugercane farms and nether wart farms via a world editor on PC and tested, issue still happens.

We also tried deleting all villagers via the ingame /kill command, this didnt work, we tried deleting all entities via the same command. We ended up deleting all the chunks around the issue area, noticed the issue was still there.

We ended up deleting probably a 50x50 chunk area centered on the issue area and it still did not work. while flying over the area in creative the issue returned and crashed us out after lagging. This was all done in an offline world for testing.

Converting the World into java format seems to remove the Issue however we loose all items in chests, Inventories, Shulkers and ender chests, as well as any and all entities (Excluding tile entites like chests and furnaces) which is why we ran through the steps of killing entities on the bedrock world as a test.

Same issue is happening in my realm. 

1 player in realm is saved/loads into the affected area and almost instantly falls into the complete lag out mode.  (No animals move, can't do any action, can't even load inventory).  Closing out will result in no one being able to access the realm for 15-20 minutes. Entering back in will have progress reverted back to latest save. 

Other players in the realm can completely operate normally until they enter the affected corrupted zone.

The affected area has no red stone.  It does have a number of passive mobs, no villagers.

This is a follow up to my previous comment.
We loaded a backup from before this issue occured and destroyed both ends of the netherword portal leading to and from the Gold farm near the large village. Since then, this particular issue has not yet reoccurrd.

I reloaded a previous save and everything worked, until I went near a portal. The game became unresponsive and destroying a block from the portal, didn't actually turn off the portal. It was still active. Once I moved away from the portal, most of the worlds textures disappeared and took approx 2-3 mins to reload in. Going back to the portal resulted in the same issue, but this time I couldn't even remove any blocks. And when moving away again, textures missing. Closing down the session and reloading, then resulted in a server connection and the save file going from 70MB to almost 190-200MB.
I then tried to download a previous save and put it in the non-realm saves section and the file ballooned out to a massive 1.9GB and wont even open. So, it appears that whatever is affecting the realms save transfers over to a normal save, making the game unplayable.
So, you may want to look at portals as having something to do, with this issue.

Found a backup from @24 hours ago that isn’t broken. I think my issues are triggered by glow lichen. I’ve got a 50x50 maze with 2block wide walkways that I e decided to light up with lichen. Will see if it all comes crashing down agai

Since the 1.18.31 patch I can confirm that the issues I reported in this original post have been resolved. Thank you to the team who were able to resolve this quickly. 

Same for me, 1.18.31 seems to fix the issue. Thanks for the fast resolution.

Happening consistently when turning on a redstone trident killer using a lever or when removing the lever.