Region lock cause by logout during elytra flying above nether ceiling

[Moranyixiao]

Expected behavior

-high speed elytra flying above nether ceiling while chunk generating
-logout
-login normally

Observed/Actual behavior

-high speed elytra flying above nether ceiling while chunk generating
-logout
-unable to login, chunk being locked

Steps/models to reproduce

-high speed elytra flying above nether ceiling while chunk generating
-logout
-unable to login, chunk being locked

Plugin and Datapack List

Folia version

This server is running Folia version 1.21-DEV-dev/1.21@2b8c879 (2024-08-24T13:00:50Z) (Implementing API version 1.21-R0.1-SNAPSHOT)
You are running the latest version

Other

No response

[Euphillya]

Cracked server, no support

[SergioK29]

Cracked server, no support

not sure what this has to do with thread locking?

[MrHua269]

I got a similar thread stack dump like this:

[MrHua269]

Also happening on old versions

[Spottedleaf]

Please run paper debug chunks --async from the console (note: --async only works from the console), and provide the console output and the chunk debug. Please also note that the chunk debug will show all online players locations and all loaded chunks.

Also, please run that from 1.21.3 - there are chunk system changes since 1.21.1.