Hi! In Illustrator 2020 if i move an anchor point with the white arrow and do a command+Z to undo my move i can't move any other anchor point until i close my document and reopen it... until i do a command+Z again. I have to close and reopen every time, anybody have that problem?
Sorry to hear about your experience. Would you mind sharing version of the OS & Illustrator? Did it happen with a specific document or all?
Have you tried resetting preferences of the Illustrator? If not, please follow this help article to do that and let us know if it helps.
**Please note that resetting preferences will remove all the custom settings and Illustrator will launch with default settings. You can also take a backup of the folders in case you want to. Location is mentioned in the article.