https://gist.github.com/BedrockLegends/85ca4bd02591665ba63a437a1dd34e8b

Happens when u click on video settings

Can confirm this as well. Mine occurred in 1.16.1

Would be nice if you could reimplement this:

OPTIFINE IS NOT SUPPORTED! THE MOD WILL DO NOTHING IF OPTIFINE IS DETECTED!

for 1.16. Getting a new report every day :/
It is currently crashing instead.

Fixed. thanks