Hi

> It would really help the devs if you could attach this tmp.org file
> (after removing any private information of course).

attached is the tmp.org file... I  scrambled the text (apart from
org-key words, etc), and it still shows the problem when I use it with
emacs -Q over here.

Steps to reproduce:

emacs -Q tmp.org
move point to a lower heading, e.g. the "a" in "3a30" (5th line from the
bottom)
cycle with <shift>-TAB (I need to hit shift-tab 4 times to see the "..."
at the top)

HTH

Arun