full screen mode - red bar at bottom

Glad I'm not the only one with this issue, even though I don't wish this issue on anyone! At first I wasn't sure if the issue was with Mac, Adobe, or Wacom. I am having the exact issue you also described, when I drag photoshp back over to my mac screen there are no calibration issues in full screen and the red bar doesnt appear, it is only on the wacom screen, also there is no registrion/calibration issues in regular mode its only in full screen and where I tap the pen to the screen the cursor doesnt draw there it draws above and it does seem to be the exact amount of space that the red bar is thick. But I spent a lot of time on the phone with wacom, and finally someone was able to say they think the issue is with Wacom. I uninstalled and reinstalled all the Wacom drivers from the newest all the way back to 5 drivers ago and nothing changed I still had the red bar, I also reset all my photoshop prefferences and nothing happened then I uninstalled photoshop and reinstalled and still the same problem. Needless to say the person I spoke to at Wacom couldn't fix it, however they do think the problem is the wacom driver, so he started a case for me and was goong to send it higher up to the programers and see if they could fix it. I will post here if they solve the problem.

i have this same problem. i tried resetting the preferences as was suggested by the only other reply, it didnt work.

what is worse is that the cursor is out of sync with the screen, which is to say that when i click (with mouse, or stylus), the effect (brush stroke, selection box, etc) actually happens above where i click (and where the cursor appears) by a distance equal to the thickness of the red bar (i think, i havent measured it or anything but it looks the same).

what is odd, is that this only happens on one of my two monitors. it only happens when using photoshop, and only in full screen mode (with or without menues), and only in the work window. the menues, toolbars, etc all work fine. for all other applications this monitor works as expected.

this monitor is also my tablet screen, so it is especially important for it to be lined up correctly, and as long as this problem persists, it makes the program unusable to me for the work i am trying to do with it. i cant find anything about this problem anywhere else on the internet.

does anyone have any other fixes?

Try resetting your Photoshop preferences if this red bar just started happening.