This just started out of the blue, no other programs open, I'm in Mac BigSur 11.3.1, Ill is up to date, tried restarting, reinstalling Ill, reset Ill preferences, ESC button works occasionally, moving with arrow keys will work but very frustrating when you have to move an image across the page. I've been using Adobe products since the late 80's and have never run into this weirdness, HELP.
Do you use the Apple Magic Mouse?
Can you try a different mouse?
Wow, looks like that worked, so weird. So is the apple mouse going bad? Is there a way to fix it?
The engineers are aware of the issue and together with Apple working on a fix.
Please search for the issue on http://illustrator.uservoice.com and add your vote. Then you will be notified of the progress.
Thank you Monika 😉