Subject: bug#64989: 29.1; Comment or uncomment lines in elisp-mode will show message in minibuffer

From: Gregory Heytings <[email-masked]>
Date: Wed, 16 Aug 2023 16:12:15 +0000

As mentioned in bug#60467, this is the same bug.  I suggest backporting 
d622602452 to emacs-29 once you are confident enough that it does not 
break anything (if it does indeed not break anything!).