Square boxes round headlights?

What are the square boxes around the megane headlights? The same goes for the Clio.

 

I've noticed that too.

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Happens with with different cars and tracks.

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Those planes look like "flares", which are usually using a special shader, is this in DEV-mode or normal ingame ? I've seen other weird things happening in 1080 which could be related to shader-index being messed up, but that's just a wild guess.

 

Does it happens on ISI or 3PA (uploaded at ISI website) tracks?

Maybe a bad graphic conversion of track to rF2?

Sometimes this bad conversions produce errors with headlights at night, but I don't know about that.