. and right-mouse-button click does not release it? I assume OSX control scheme works the same as on WIndows where holding right-mouse-button is used to go into that movement mode.
No, nothing seems to release it, it's perma-stuck.
Do you remember what you were doing before it got stuck in that mode? The exact key combinations you might have pressed? I need to somehow reproduce it on my side to be able to track down the problem.
Simply left mouse clicking to draw tiles was the last thing I did that I remember.
You do not have any other plugins installed which want to be active in the scene view and control the tools/ cursor modes?