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. ------------------------------------------------------------------------ Hello, I use theme which draw boxes around priority cookie. Before updating to version 9.4 box was rendered just around square brackets, but since version 9.4 it has additional space at the end. I think it's related to the fact that org-priority face definition used to use separate regex which didn't include space, and now it uses variable org-priority-regexp which does include additional space character. ;; Old (defun org-font-lock-add-priority-faces (limit) "Add the special priority faces." (while (re-search-forward "^\\*+ .*?\\(\\[#\\(.\\)\\]\\)" limit t) (add-text-properties (match-beginning 1) (match-end 1) (list 'face (org-get-priority-face (string-to-char (match-string 2))) 'font-lock-fontified t)))) ;; New (defun org-font-lock-add-priority-faces (limit) "Add the special priority faces." (while (re-search-forward org-priority-regexp limit t) (add-text-properties (match-beginning 1) (match-end 1) (list 'face (org-get-priority-face (string-to-char (match-string 2))) 'font-lock-fontified t)))) (defvar org-priority-regexp ".*?\\(\\[#\\([A-Z0-9]+\\)\\] ?\\)" Removing space before last question mark fixes my problem, but I'm not sure it won't affect something.[org-mode-priority-9.3.8.png][org-mode-priority-9.4.png] Emacs : GNU Emacs 27.1 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw3d scroll bars) of 2020-08-11 Package: Org mode version 9.4 (9.4-elpaplus @ /home/rrudakov/.emacs.d/elpa/org-plus-contrib-20200914/)