Incorrect cursor placement after using 'undo'

[the_wurfkreuz]

When i comment something inside a source block but then decide to undo

the commenting, the cursor ends up on the very first line of the block.

Steps to reproduce:

1. emacs -Q

2. In a scratch buffer activate org-mode and paste this:

#+begin_src fundamental

  aoisretnoairsetn

 oarisetnoairse

 aorsoietnoairsent

 arsnthi

 arisentnhairsnht

 aoirsetnaoi

 oairsetnoarisetn

#+end_src

3. Apply commenting using 'comment-region' with any characters of you

     choice on the lines on the bottom half of the block:

#+begin_src fundamental

  aoisretnoairsetn

 oarisetnoairse

 aorsoietnoairsent

 arsnthi

 ;; arisentnhairsnht

 ;; aoirsetnaoi

 ;; oairsetnoarisetn

#+end_src

4. After that press 'C-x u' to execute 'undo'. The cursor will end up at

     the start of the block. I expect it to be somewhere within the commented

     lines: on the line where the commenting initially applied or on the line where 

     the commenting ended.

Emacs  : GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0)

 of 2024-04-23

Package: Org mode version 9.8-pre (release_9.7.6-86-g571f1c @ /home/wurfkreuz/.emacs.d/straight/build/org/)