Anyone else have this? It only shows up when I wake it from sleep. I only have it under 10.9 and only after DP4. It's fine under 10.8. I reported it as a bug already but its still there in GM.
Guess I'm not the only one with this issue, although I'm on a 2010 15" MBP.
Everything appears fine at first, but then after a bit of use things start going downhill. The drop shadows around windows tend to glitch the most, but things like icons and window contents can also glitch too.