OpenGL error debug message spam and 100% cpu usage with 2.3 DH

This gets spammed:
[14:13:26] [Thread-56/INFO]: OpenGL debug message: id=2, source=API, type=ERROR, severity=HIGH, message='GL_INVALID_OPERATION in glBindTexture(non-gen name)'

And CPU usage is 100%, while GPU is normal. Shaders also don't work, but that's a different issue.
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