[BUG] Headings do not unfold [9.6.15 (release_9.6.15 @ /gnu/store/…-emacs-29.4/)]

["Pierre-Henry Fröhring" <contact@phfrohring.com>]

1 Description
=============

  I keep encountering errors while editing an Org Mode document, like this
  one. I can’t figure out what causes them or how to reproduce them. When
  these errors occur, headings stop unfolding, and I have to kill and
  reload the buffer to continue editing.


2 Backtrace
===========

  ⛔ Warning (org-element-cache): org-element--cache: Added org-data parent to non-headline element: (section (:begin 13598 :end 13666 :contents-begin 13598 :contents-end 13665 :robust-begin 13598 :robust-end 13663 :post-blank 1 :post-affiliated 13598 :mode section :granularity element :cached t :parent (headline (:raw-value "Updated" :begin 13588 :end 14071 :pre-blank 0 :contents-begin 13598 :contents-end 14070 :robust-begin 13664 :robust-end 14068 :level 1 :priority nil :tags nil :todo-keyword nil :todo-type nil :post-blank 1 :footnote-section-p nil :archivedp nil :commentedp nil :post-affiliated 13588 :ID "12758c82-676d-4fff-bde2-7a7040d37e5a" :title "Updated" :mode nil :granularity element :cached nil :parent (org-data (:begin 1 :contents-begin 1 :contents-end 39012 :end 39012 :robust-begin 3 :robust-end 39010 :post-blank 0 :post-affiliated 1 :path "/home/phf/src/alexandria/alx/assets/js/actor.js.org" :mode org-data :CATEGORY "actor.js" :cached t)) :org-element--cache-sync-key (98 . 13587))) :org-element--cache-sync-key (98 . 13596)))

  Emacs : GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0)
  Package: Org mode version 9.6.15 (release_9.6.15 @ /gnu/store/h951ybhj9lm8cj7k85mn9j9xmb8mcpn0-emacs-29.4/share/emacs/29.4/lisp/org/)

  current state:
  `============'
  (setq
   org-agenda-prefix-format '((agenda . " %-12t %-18:c %s") (todo . " %i %-12:c")
                              (tags . " %i %-12:c") (search . " %i %-12:c"))
   org-link-elisp-confirm-function 'yes-or-no-p
   org-link-keep-stored-after-insertion t
   org-hide-emphasis-markers t
   org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn ENTRY)"]
   org-columns-default-format-for-agenda "%SCHEDULED %CATEGORY %TODO %ITEM %Effort(Effort){:}"
   org-log-into-drawer t
   org-persist-after-read-hook '(org-element--cache-persist-after-read)
   org-export-before-parsing-hook '(org-attach-expand-links)
   org-cycle-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
   org-archive-hook '(org-attach-archive-delete-maybe)
   org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function
   org-ascii-format-drawer-function #[771 "\207" [] 4 "\n\n(fn NAME CONTENTS WIDTH)"]
   org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines
                    org-cycle-optimize-window-after-visibility-change
                    org-cycle-display-inline-images)
   org-persist-before-read-hook '(org-element--cache-persist-before-read)
   org-babel-post-tangle-hook '(user--org-remove-property-drawers)
   org-mode-hook '(er/add-org-mode-expansions
                   #[0 "\300\301\302\303\304$\207"
                     [add-hook change-major-mode-hook org-fold-show-all append local] 5]
                   #[0 "\300\301\302\303\304$\207"
                     [add-hook change-major-mode-hook org-babel-show-result-all append local]
                     5]
                   org-babel-result-hide-spec org-babel-hide-all-hashes
                   #[0 "\301\211\207" [imenu-create-index-function org-imenu-get-tree] 2])
   org-babel-load-languages '((emacs-lisp . t) (C . t) (css . t) (shell . t) (lisp . t)
                              (scheme . t) (dot . t) (awk . t) (R . t) (python . t) (js . t))
   org-agenda-time-grid '((daily today require-timed) (600 2400) " ┄┄┄┄┄ " "┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄")
   org-agenda-span 'day
   org-latex-format-drawer-function #[514 "\207" [] 3 "\n\n(fn _ CONTENTS)"]
   org-ellipsis " "
   org-latex-format-headline-function 'org-latex-format-headline-default-function
   org-confirm-shell-link-function 'yes-or-no-p
   org-html-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
   outline-isearch-open-invisible-function 'outline-isearch-open-invisible
   org-agenda-sorting-strategy '(time-up todo-state-down priority-down)
   org-startup-indented t
   org-odt-format-headline-function 'org-odt-format-headline-default-function
   org-agenda-before-write-hook '(org-agenda-add-entry-text)
   org-src-preserve-indentation t
   org-babel-tangle-lang-exts '(("python" . "py")
                                ("/gnu/store/fprwcqm613yrcg3r6hliw4p8c45l2qaf-gawk-5.3.0/bin/awk" . "/gnu/store/fprwcqm613yrcg3r6hliw4p8c45l2qaf-gawk-5.3.0/bin/awk")
                                ("lisp" . "lisp") ("D" . "d") ("C++" . "cpp")
                                ("emacs-lisp" . "el") ("elisp" . "el"))
   org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer)
   org-confirm-elisp-link-function 'yes-or-no-p
   org-hide-leading-stars t
   org-todo-keywords '((sequence "TODO(t)" "WAITING(w)" "|" "DONE(d)" "FAILED(f)"
                        "CANCELED(c)")
                       )
   org-id-link-to-org-use-id t
   org-deadline-warning-days 1
   org-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate)
   org-html-format-inlinetask-function 'org-html-format-inlinetask-default-function
   org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
   org-odt-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
   org-fold-core-isearch-open-function 'org-fold-core--isearch-reveal
   org-latex-format-inlinetask-function 'org-latex-format-inlinetask-default-function
   org-persist-before-write-hook '(org-element--cache-persist-before-write)
   org-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
   org-link-shell-confirm-function 'yes-or-no-p
   org-babel-pre-tangle-hook '(save-buffer)
   org-agenda-loop-over-headlines-in-active-region nil
   org-todo-keyword-faces '(("TODO" :foreground "red" :family "JetBrains Mono" :height 0.9)
                            ("WAITING" :foreground "orange" :family "JetBrains Mono" :height
                             0.9)
                            ("FAILED" :foreground "purple" :family "JetBrains Mono" :height
                             0.9)
                            ("DONE" :foreground "green" :family "JetBrains Mono" :height 0.9)
                            ("CANCELED" :foreground "grey" :family "JetBrains Mono" :height
                             0.9)
                            )
   org-occur-hook '(org-first-headline-recenter)
   org-metadown-hook '(org-babel-pop-to-session-maybe)
   org-link-parameters '(("attachment" :follow org-attach-follow :complete
                          org-attach-complete-link)
                         ("eww" :follow org-eww-open :store org-eww-store-link)
                         ("rmail" :follow org-rmail-open :store org-rmail-store-link)
                         ("mhe" :follow org-mhe-open :store org-mhe-store-link)
                         ("irc" :follow org-irc-visit :store org-irc-store-link :export
                          org-irc-export)
                         ("info" :follow org-info-open :export org-info-export :store
                          org-info-store-link :insert-description
                          org-info-description-as-command)
                         ("gnus" :follow org-gnus-open :store org-gnus-store-link)
                         ("docview" :follow org-docview-open :export org-docview-export :store
                          org-docview-store-link)
                         ("bibtex" :follow org-bibtex-open :store org-bibtex-store-link)
                         ("bbdb" :follow org-bbdb-open :export org-bbdb-export :complete
                          org-bbdb-complete-link :store org-bbdb-store-link)
                         ("w3m" :store org-w3m-store-link)
                         ("doi" :follow org-link-doi-open :export org-link-doi-export)
                         ("mu4e" :follow mu4e-org-open :store mu4e-org-store-link)
                         ("id" :follow org-id-open)
                         ("treemacs" :store treemacs-store-org-link) ("file+sys")
                         ("file+emacs") ("shell" :follow org-link--open-shell)
                         ("news" :follow
                          #[514 "\301\300\302Q\"\207" ["news" browse-url ":"] 6
                            "\n\n(fn URL ARG)"]
                          )
                         ("mailto" :follow
                          #[514 "\301\300\302Q\"\207" ["mailto" browse-url ":"] 6
                            "\n\n(fn URL ARG)"]
                          )
                         ("https" :follow
                          #[514 "\301\300\302Q\"\207" ["https" browse-url ":"] 6
                            "\n\n(fn URL ARG)"]
                          )
                         ("http" :follow
                          #[514 "\301\300\302Q\"\207" ["http" browse-url ":"] 6
                            "\n\n(fn URL ARG)"]
                          )
                         ("ftp" :follow
                          #[514 "\301\300\302Q\"\207" ["ftp" browse-url ":"] 6
                            "\n\n(fn URL ARG)"]
                          )
                         ("help" :follow org-link--open-help :store org-link--store-help)
                         ("file" :complete org-link-complete-file)
                         ("elisp" :follow org-link--open-elisp))
   org-html-format-headline-function 'org-html-format-headline-default-function
   org-metaup-hook '(org-babel-load-in-session-maybe)
   org-src-lang-modes '(("js" . js-ts) ("C" . c) ("C++" . c++) ("asymptote" . asy)
                        ("bash" . sh) ("beamer" . latex) ("calc" . fundamental) ("cpp" . c++)
                        ("ditaa" . artist) ("desktop" . conf-desktop) ("dot" . fundamental)
                        ("elisp" . emacs-lisp) ("ocaml" . tuareg) ("screen" . shell-script)
                        ("shell" . sh) ("sqlite" . sql) ("toml" . conf-toml))
   org-agenda-show-future-repeats 'next
   )