Have also been having this problem for the past month or so. Am running CC 2014 (13.2) and CS6 on the same machine. Can replicate the problem on both versions. Issue temporarily goes away after a reboot. But comes back. Sometimes after a day, sometimes an hour. Quite frustrating. No one come across a fix yet?
Mac OS X 10.8.5
Mac Pro
2x 2.4 GHx Quad-Core Intel Xeon
16GB Ram
NVIDIA Quadro 4000 2048 MB