[BUG] Unexpected behaviour of TAB in table depending on font family [9.6.15 (release_9.6.15 @ /snap/emacs/current/usr/share/emacs/29.4/lisp/org/)]

[Giovanni Pavolini <giovanni.pavolini@gmail.com>]

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Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     https://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org mailing list.
------------------------------------------------------------------------

I wanted to customize my default font by `(custom-set-faces '(default
((t(:family "Ubuntu")))))`. Then, after `M-x org-table-create` the TAB
started creating a cell to the left of the one it should have jumped to
(see a video here (webmd video of the screencast):
https://u.pcloud.link/publink/show?code=XZVXhe0Z2K8AAQBKOwQH7uE7LkNtHYGlHQTy
). The expected behaviour is that TAB only jumps to the next cell,
without creating additional ones. The actual behaviour is, depending on
the family font used, it does create an additional cell. Not every
font causes the unexpected behaviour.

I made a list of all fonts I have installed in my machine (shell
`fc-list -b` and then get the text in "family"), and tested if
they caused the TAB to behave unexpectedly or not. The results are here
(org file):
https://u.pcloud.link/publink/show?code=XZbXhe0ZptNoWfCjJc7bKxFCXyzTgzNKdDsV
. 34 of the 173 fonts I have installed fail (cause the unexpected
behaviour).

Emacs  : GNU Emacs 29.4 (build 2, x86_64-pc-linux-gnu, GTK+ Version
3.24.20, cairo version 1.16.0)
 of 2024-06-23
Package: Org mode version 9.6.15 (release_9.6.15 @
/snap/emacs/current/usr/share/emacs/29.4/lisp/org/)

current state:
==============
(setq
 org-link-elisp-confirm-function 'yes-or-no-p
 org-bibtex-headline-format-function #[257 "\300 \236A\207" [:title] 3
"\n\n(fn ENTRY)"]
 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-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-mode-hook '(#[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)
 org-confirm-shell-link-function 'yes-or-no-p
 outline-isearch-open-invisible-function 'outline-isearch-open-invisible
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 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-speed-command-hook '(org-speed-command-activate
org-babel-speed-command-activate)
 org-persist-directory "/tmp/org-persist-21hJMa"
 org-fold-core-isearch-open-function 'org-fold-core--isearch-reveal
 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-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) ("id" :follow org-id-open)
      ("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)
      ("file+sys") ("file+emacs") ("shell" :follow org-link--open-shell)
      ("news" :follow #[514 "\301\300\302 Q \"\207" ["news" browse-url ":"]
6 "\n\n(fn URL ARG)"])
      ("mailto" :follow #[514 "\301\300\302 Q \"\207" ["mailto" browse-url
":"] 6 "\n\n(fn URL ARG)"])
      ("https" :follow #[514 "\301\300\302 Q \"\207" ["https" browse-url
":"] 6 "\n\n(fn URL ARG)"])
      ("http" :follow #[514 "\301\300\302 Q \"\207" ["http" browse-url ":"]
6 "\n\n(fn URL ARG)"])
      ("ftp" :follow #[514 "\301\300\302 Q \"\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-metaup-hook '(org-babel-load-in-session-maybe)
 )

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