Add-on to auto-number windows to help maintain a stable menu order on Mac OS (Fx108+ issue)
https://addons.mozilla.org/firefox/addon/auto-number-windows/
Version 0.5 migrated to Manifest v3 and adds a toolbar button providing access to the "Renumber windows now" command (as an alternative to the Tools menu) as well as an optional window list and a "numberless" option.