I am converting GUI code to latest version. Here is an old playground of mine that looks right in v3.3:
In latest versions (besides % warnings and other oddities) the mesh plane no longer faces the camera. I think it may be in a stored translation/billboard - was already digging a bit… I will be checking it out fully this weekend to PR, but just wanted to share here in case anybody had any thoughts.
I tried simple 180 degree correction
lookAt(camera.position, Math.PI / 2), but it’s not just because it’s the backface