Worldthreader

Worldthreader 2.4.1 for Minecraft 1.21.8 fixes an issue with unlinked nether portals. 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

• Two entities using the same unlinked nether portal at the same time generates multiple nether portals in the other dimension