FalsePattern

Does it happen if you remove the XRay mod but keep optifine?

I cannot reproduce this in a test instance with BSL shaders. Send a zip file of the modpack you're testing with, along with this test world.

Disable quad triangulation in the settings gui.

Remove -Dmixin.debug=true for the time being when running with optifine

Fixed in 2.7.0 Preview 4 + FalsePatternLib 1.0.0 Preview 3

2.7.0 should work now, make sure to delete falsetweaks.cfg and let it regenerate with default settings if it's still broken I have tested it on: - Linux - AMD Mesa...

Hmmm... try setting `TEXTURE_OPTIMIZATIONS` to `false` in the falsetweaks config and see if that does anything, it might be a conflict with how i handle textures vs how lwjgl3ify handles...

Ah, better foliage is not compatible with threaded rendering. Will be fixed in the next update.

Does this still happen on 3.0.0 beta 4 with my custom neodymium branch?

The crash seems like a weird internal bug in mixins. I'll add a workaround in the next release. As for the shadersmod thing, OptiFine E7 contains shadersmod embedded inside itself,...