There is a lighting bug that has been effecting reflections for a while now.

In the most recent patch the effect has greatly diminished but is still prevalent.

It looks like cop car siren lights (cop lights, cop siren, siren lights, police lights, police siren lights, police siren) in the top left of the screen.

It only happens to glass textures that have another piece of glass behind it.

When the light effect stops it leaves a pixel artifact in the top left of the screen that is a few...

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