yeah, outside of gui menu it working perfectlyHave you tested the font outside the clickgui? it can be possible that the issue is caused by some weird openGL Operations you are using.
it lags so much when debuggingi solved that problem.
found perfect glyph font system https://github.com/AliHampton/Glyph-Font-Renderer (no ad) and did minecraft color codes working with that font system
i dont have that bugit lags so much when debugging
yeah i have it too but im sure that easy to fix[03:31:34] [Client thread/ERROR]: @ Post render
[03:31:34] [Client thread/ERROR]: 1282: Invalid operation