This was caused by unprotected drawing callbacks. As of 2.91, we require that all python callbacks used for drawing needs to be safeguarded by `GPU_bgl_end()` to end the state tracking override.
This was caused by unprotected drawing callbacks. As of 2.91, we require that all python callbacks used for drawing needs to be safeguarded by `GPU_bgl_end()` to end the state tracking override.