Light blocks stay longer than they should be

[PanCaKePanCaKee]

Describe the bug

I am using some mods for building, and when using the datapack version the markers stay longer than normal, up to several minutes. 1.21.4 fabric
modlist:

after removing all mods, inc datapacks, the behavior is still the same.

Steps to reproduce

1. use mods from list,
2. walk around with a lightsource

Expected behavior

The lightblocks should be broken instantly

Additional context

No response

[Tschipcraft]

Hm, I couldn't replicate this by just using the mods with the data pack version. Could you attach a screenshot with the performance graph enabled? (hotkey F3 + 2)