Hey,
I am the current maintainer and owner of the mod ForceGL2.0 Github, I would like to report an incompatibility of this mod with my mod, my mod forces the game to use OpenGL 2 which in itself is probably the cause of this issue(entities don't render properly), so if at all you can add a workaround it'll be great(which I assume will take a significant amount of work if the rendering has anything to do with the GL version), else I'd really appreciate if you can just add it as an incompatible mod to your incompatibility list.
Thanks !

Edit: I am absolutely willing to change my mod's code in any way if suggested.

Nvm it's an issue if shaders are used with Iris.