For me it happen mostly when opening Gl objects help file +/- copy/paste elements into the patch I'm working on.
When I don't add/delete any GL objects, everything is fine.
Freeze and/or very glitchy window output.
Patche freeze, I can't save/edit/change mode.
Message: jit.gl.fbo: unsupported framebuffer format.
I don't have patch to demonstrate but I will try to make one.
Does anyone has this kind of problems ?