Thanks for reporting the issue . Unfortunately we are not able to reproduce this issue. Could you kindly provide the following information to help us nail this down :
1. Machine details which can be found by :WIN : Go to settings and Click on System and Click on About . In Windows Specifications , machine details can be found .
MAC : Choose Apple menu > About This Mac.
2. Version of Illustrator .
3.Kindly rename your Preferences folder placed in below location and share this folder with us .
MAC: /Users//Library/Preferences/Adobe Illustrator Settings//
WIN: C:\Users\\AppData\Roaming\Adobe\Adobe Illustrator Settings\
Kindly share the above with us in a Zip file at firstname.lastname@example.org. Please mention the title of this issue as the subject of the mail.
An error occurred while saving the commentGio commented
Same issue here, CC 2021, MBP2019 touch bar, @Ken High solution it's the only solution ahead