Suspected bug: example block in a footnote doesn't fold if starts with 2 blank lines

[Alain . Cochard]

Hello.  When I visit an org buffer containing only:

  foo[fn:1]

  [fn:1] bar
  #+begin_example


  x
  #+end_example

then, hitting <TAB> when the cursor is on either '#' does nothing
(i.e., no folding).

Tested with 'emacs -Q' and the following combinations:

GNU Emacs 27.2 (build 1, x86_64-redhat-linux-gnu, GTK+ Version
3.24.30, cairo version 1.17.4) of 2021-08-07 Org mode version 9.4.4
(release_9.4.4 @ /usr/share/emacs/27.2/lisp/org/)

GNU Emacs 28.1 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.24.30,
cairo version 1.17.4) of 2022-08-16 Org mode version 9.5.2
(release_9.5.2-25-gaf6f12 @
/home/cochard/usr/local/emacs-28.1/lisp/org/)

GNU Emacs 29.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.30,
cairo version 1.17.4) of 2022-08-22 Org mode version 9.5.4
(release_9.5.4-17-g6e991f @
/home/cochard/usr/local/emacs-29/lisp/org/)

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