Whole map renders dark

This bug was reported already like 3-4 months ago. Today I launch the game and get it twice in a row. I match against some random players (because you know, the great matchmaking system loves to make you wait for 7:30 and then just match someone 1000 elo lower…) and am forced to resign and lose 50 Elo, dropping from #1 on the ladder to #3, 3 days before the start of a $1000 tournament which is precisely seeded by Elo…

Care to do something about it? Make the game playable please.