diff --git a/lisp/org-macs.el b/lisp/org-macs.el
index 0ccf080a3..0a7da0637 100644
--- a/lisp/org-macs.el
+++ b/lisp/org-macs.el
@@ -920,7 +920,16 @@ (defun org-string-width (string &optional pixels)
     (with-temp-buffer
       (setq-local display-line-numbers nil)
       (setq-local buffer-invisibility-spec
-                  current-invisibility-spec)
+                  (if (listp current-invisibility-spec)
+                      (mapcar (lambda (el)
+                                ;; Consider elipsis to have 0 width.
+                                ;; It is what Emacs 28+ does, but we have
+                                ;; to force it in earlier Emacs versions.
+                                (if (and (consp el) (cdr el))
+                                    (list (car el))
+                                  el))
+                              current-invisibility-spec)
+                    current-invisibility-spec))
       (setq-local char-property-alias-alist
                   current-char-property-alias-alist)
       (let (pixel-width symbol-width)