Michael Dauer <mick.dauer@gmail.com> writes:

> Maybe I missed a known bug when doing the research. But all the other reports describe different and
> reproducible behaviour.
>
> Sometimes (often) I cannot unfold a subtree. It then affects only one or more subtrees while others in the
> same buffer or even the same branch still work. The only fix then is to either cut and paste the affected
> branches, or to close and reopen the file.
>
> While quite frequent I have not achieved to reproduce the issue. It just happens after a while of using
> multiple files navigating with search, tab from agenda, org-refile, and cycle.
>
> 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.
>
> I hope this helps to fix the issue.
>
> Org mode version 9.7-pre (release_9.6.4-327-gf81ba4

I got same problem many times. Usually I close buffer and re-open file again.
I can confirm this issue. I will provides some info help here too.

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