This conversation has been merged. Please reference the main conversation: Lightroom 6.2.1: Problem when viewing images and video full screen (F key related)
Select Spot Removal tool.
Press 'F' for full screen view. Lightroom locks in full screen mode (without the tool available for use), or sometimes freezes between screens.
Can only recover by using command tab to switch to Finder, then force quitting Lightroom.
Happens consistently when I carry out the above sequence of actions.
Late 2014 Macbook Pro, 3Ghz i7 processor, 512GB ram.