I recently reported that a slew of new bugs had appeared in Adobe Photoshop CC 2015.
Now with the very recent update to Photoshop CC 2014, Adobe has apparently decided to backport the CC 2015 bugs into CC 2014, at least some of them.
Beware: the bugs involve the GPU, a notoriously unstable area. CC 2014 and CC 2015 have been crashing on me at 5X the rate of the previous versions.
Adobe appears to be steadily replacing proven and optimized non-GPU code with faster but unstable GPU code, while also apparently replacing optimized non-GPU code with turtle-slow code (maybe an internal overhaul of sorts).
So you now can choose fast unstable operation with the GPU code (regular crashes and malfunctions and/or broken functionality), or more reliable but turtle slow operation if the GPU is disabled (I have disabled the GPU for years due to instability).