This was due to the background being drawn by a batch that had its VAO generated in the windows "UI" context. Since we use the DRW ogl context to draw the entire area, we have to regenerate the VAO for thoses UI batches to be drawn correctly.
This was due to the background being drawn by a batch that had its VAO generated in the windows "UI" context. Since we use the DRW ogl context to draw the entire area, we have to regenerate the VAO for thoses UI batches to be drawn correctly.