In the Chaos that is 2020 it's good to see some things stay consistent. Like this bug from 2010
Just upgraded to the very latest version of Illustrator, and it's great to see my old friend is still there. This bug is at least a decade old.
Basically to reproduce: use a wacom tablet. Click on the anchor point, or hold alt while using the rotate or reflect tool. The anchor point is now stuck to your cursor for an indefinite amount of time, and no amount of clicking will do anything. Illustrator is completely unresponsive.
The only solution is to go into preview mode (ctrl/cmd-y) before you set the anchor point, or after it happens sometimes clicking on a window outside Illustrator.
