Answered
keyboard shortcuts stop working when hit tab
Gear: Cintiq Pro 24, Intuos Pro S
Bug: Open photoshop, create doc, couple brush strokes is ok. Then hit TAB - and you can't draw anymore on canvas and none of shortcuts is working. You need to alt+tab to another application and return back to make it working fine again. Every time after update to v23. Really???
Wish I was able to return to CS6...