For me it showed up every once in a while when the game window resolution was being changed, and changing it once more always fixed it Maybe some race condition with the depth data? It usually is so easily fixable that it is not worth getting into
It seems to happen 100% of the time on loading the world not a big deal as I just tap F11 a couple times and it's fixed, is there a compatibilty issue with Cubes Without Borders maybe?
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