Hello,
I've been playing the latest snapshot on a server with some friends to test and play with the new features.
However seemingly at random some chunks start beginning to corrupt, if I do something in it which should change the data about that chunk (break block, place block, edit inventory of chests etc) and then relog all of the progress is undone as if I didn't touch that chunk.
It doesn't seem to just be limited to one chunk either I should note, it seems to happen in collections of chunks.
I built the world on snapshot 21w08b and have upgraded to 21w10a. I've had this problem on both snapshots.
For some reason this bug can seemingly also fix itself although I'm not sure what fixes it, it seems to be random. This is happening in both the overworld and the nether, I haven't yet tried the end.
I should also note that no errors appear in console either when logging in and out.
Gif of the bug: https://gyazo.com/5996c57546a794df759f1f3e82cf97bc
Linked issues
Comments 6
I should also note that entities such as iron golems don't appear to rollback even though blocks do in the same area.
I've just downloaded the world and loaded up in a singleplayer game and I don't have that issue anymore so seems to be server related?
Just one other update. I've resolved the broken chunk by downloading the map, loading it up in singleplayer. Then after saving the world, re-uploading the related region file to the server and the bug is now fixed.
I make nightly backups so if you need help just let me know.
Duplicate of MC-216148 which was fixed in 21w18a.
Thank you for your report!
We're tracking this issue in MC-216148, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as Fixed. Please check the Fix Version/s field in that ticket to see in which version this behavior was or will be fixed.
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