Hey I got a crash when breaking the chopping block.
I suspect it might be with matrix push/pop being out of sync when you return here; might fix to move the push right before the setupMatrix() method call.

Mc: 1.16.5
Forge: 36.2.34
Mod: primutils-1.0.3.jar

If I tested out the issue could I make a PR with the fix for upload? We really would like to use this but can't :/

Hey, sorry for the inconvenience. Yes you can absolutely make a PR if you have a fix, but if not I'm happy to fix it myself. :)

Thanks for reporting

I think your suspicion is probably correct, and in that case the problem exist in the other blocks as well