A brand-sparkling new game, started in v22 experimental 5. Anyway, I suppose this is nothing new, as I remember the same issue being there intermittently from version to version, now it seems to be back once more though. Water tiles are black. Not a huge issue, but looks rather unfinished. Screenshots attached.
System specs: core i7 920, Geforce 750Ti (forceware driver version 335.23), two displays and running the game in fullscreen mode at 1920x1080
ps. About the reporting. I'll do better next time. I promise.