I've been having a strange problem with Photoshop CS6 since upgrading to OSX Mavericks a few weeks ago. Whenever I use a keyboard command repeatedly ie. to increase or decrease a brush size it will work for the first few presses but will then become unresponsive and seemingly deselect the Photoshop window. I then have to click back onto the canvas before continuing to adjust my brush size. It's an annoying issue which is starting to really slow down my workflow.
I tried resetting my prefences in the hopes that would fix the error, unfortuntately that didn't do the job.
Does anyone have any thoughts on how I could tackle this problem?