No, just in the first level. I'm running on Firefox on Linux. By coincidence I read up on WebRender on Firefox today and decided to force it turned on - sudden

No, just in the first level. I'm running on Firefox on Linux. By coincidence I read up on WebRender on Firefox today and decided to force it turned on - suddenly the game looks nice (only glitch when looking down below the candle one of the wall segments still vanishes). But it runs a lot better with WebRender (which uses the Graphics card to composite) than without on my machine.