I am running PS CC 2015.5 on Mac OS 10.10.5 and my healing brush is not working at all. The spot healing brush appears to be functioning normally, but the regular healing brush does nothing at all. This has been happening periodically since my previous photoshop update. I was hoping maybe the latest update might have fixed this bug, but if anything, it may have become and even more frequent occurrence. Sometimes saving the file seems to clear up the issue, at least temporarily, but not today. Has anyone else found this problem? Any solutions?
Win: Press and hold Ctrl+Alt+Shift immediately after initiating Photoshop's startup. A box will appear asking if you want to continue with the reset, select "yes." If you don't see this, you weren't fast enough...Try again.
Mac: Press and hold Cmd+Opt+Shift then start Photoshop. A box will appear, asking if you want to continue with the reset, select "yes."