Worldthreader

Worldthreader 2.5.1 for Minecraft 1.21.9 fixes an issue where player respawning fails. Please report any issues you encounter to the issue tracker of worldthreader. As worldthreader likely comes with massive mod compatibility issues, please do not report crashes and issues to other mods' issue trackers before confirming the issue without worldthreader.

Fixes:

• Fix player respawning