> Is it possible this is a video driver / OpenGL problem on your system? > Can you try running octave with LIBGL_ALWAYS_SOFTWARE=1 in your > environment? See also https://www.mesa3d.org/envvars.html for other > variables to try.
Yeah, running octave with LIBGL_ALWAYS_SOFTWARE=1 indeed solves the problem. Good to know it's not an octave bug after all then! Thanks, -- pollo
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