@guiverc Chris - I looked for the prior old thread where I mentioned Firefox (snap) could not display the LibreOffice Help files and you filed a bug report on it back then. I logged into Launchpad, but could not find the bug report. This issue is also present in 22.04.
File not found
Firefox can’t find the file at /usr/share/libreoffice/help/index.html?Target=swriter/.uno:HelpIndex&Language=en-US&System=UNIX&Version=7.3.
Check the file name for capitalization or other typing errors.
Check to see if the file was moved, renamed or deleted.
Even though Chromium is set as the default browser (also a snap), Firefox still launched in the attempt to display the files.