1.16.5, 21w11a, 1.17 Release Candidate 2, 1.17, 1.17.1, 21w38a, 21w39a, 21w42a, 1.18.1, 1.18.2, 22w17a, 22w18a, 22w19a, 1.19 Pre-release 1, 1.19 Pre-release 2, 1.19 Pre-release 3
When a command block is full of characters that take more than 1 byte to store, the chunk that command block is in gets corrupted.
How to reproduce
- Place a command block down.
- Copy and paste this symbol "■" into the command block until the command block is full.
- Save and quit to title.
- Get back in the world.
→ The chunk the command block was in is re-generated; resetting everything in it
■ is not the only character this works with.
Game output error message
Failed to store chunk [7, 1] java.io.UTFDataFormatException: encoded string (■■■■■■■■...■■■■■■■■) too long: 97500 bytes at java.base/java.io.DataOutputStream.writeUTF(DataOutputStream.java:368) at java.base/java.io.DataOutputStream.writeUTF(DataOutputStream.java:332) at nq.a(SourceFile:65) at na.a(SourceFile:415) at na.a(SourceFile:104) at ng.a(SourceFile:81) at na.a(SourceFile:415) at na.a(SourceFile:104) at na.a(SourceFile:415) at na.a(SourceFile:104) at nk.a(SourceFile:95) at nk.a(SourceFile:83) at cnq.a(SourceFile:70) at cnm.a(SourceFile:153) at cnm.a(SourceFile:143) at ara$b.run(SourceFile:61) at aqy.g(SourceFile:91) at aqy.a(SourceFile:146) at aqy.run(SourceFile:102) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) at java.base/java.lang.Thread.run(Thread.java:831)
(Video by Phoenix SC)
- is duplicated by
MC-252030 Overfilling command block with emoji results in chunk reset, possible crash or world corruption.
MC-252093 Random Emoji on Command Block Causing world to corrupt or crashing