Hi.

Using a file with just one header:

* something

  :CLOCK:
  CLOCK: [2022-12-01 Thu 17:15]--[2022-12-01 Thu 17:30] =>  0:15
  :END:

If I put the cursor on the end timestamp (on the 3 of 17:30) and press shift+up or shift-down, the timestamp is correctly adjusted by 5 minutes, but the cursor jumps some characters to the right and stays at the right of ]

It should stay on the same character (the 3), so that I can keep adjusting the minutes with shift-up/down

Tested on: GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw scroll bars) of 2022-11-18

No other settings needed in your .emacs

I bisected the tree until I found in which commit this started. Copying from git bisect:

5bc6741a5abd42e8305bb0fcfe78801813309640 is the first bad commit
commit 5bc6741a5abd42e8305bb0fcfe78801813309640
Author: Ihor Radchenko <yantar92@posteo.net>
Date:   Tue Nov 1 15:52:25 2022 +0800

    org-clock-update-time-maybe: Update the containing timestamps as well
   
    * lisp/org-clock.el (org-clock-update-time-maybe): Update the
    containing timestamps inside the clock, not only the clock sum.
   
    Reported-by: Bruce E. Robertson <brucer42@gmail.com>
    Link: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=53393

 lisp/org-clock.el | 35 ++++++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 11 deletions(-)