This is with the cursor on the first asterisk:
Text content at position 299:


There are text properties here:
  display              [Show]
  face                 org-level-1
  fontified            t

I could not test more positions because I accidentally cut it, and even an
undo fixed it. I would have to wait until it happens again.

Am Fr., 5. Mai 2023 um 19:43 Uhr schrieb Ihor Radchenko <yantar92@posteo.net
>:

> Michael Dauer <mick.dauer@gmail.com> writes:
>
> > Based on my analyses it's not the cycle functions, but must come from
> > broken text attributes. Even (org-fold-core-region (point-min)
> (point-max)
> > nil) does not unfold the affected subtrees then. Assuming that
> > (org-fold-core-region) is the only place where the folding and
> > hiding happens, I expect the problem there. But I understand too little
> > about the emacs internals to debug this function.
>
> May you please put a point right before the problematic fold, run
> M-x describe-text-properties <RET>, and share the contents of the newly
> displayed buffer listing all the text properties?
>
> --
> Ihor Radchenko // yantar92,
> Org mode contributor,
> Learn more about Org mode at <https://orgmode.org/>.
> Support Org development at <https://liberapay.com/org-mode>,
> or support my work at <https://liberapay.com/yantar92>
>