People who don't have time to discuss that IceCat is the upstream sync
of Firefox (ESR) often submit bugs to add-on developers as they were
used with "Firefox". This cause confusion as IceCat actually are based
on "Firefox ESR".
To solve this problem, please mention "Firefox ESR" in
https://directory.fsf.org/wiki/GNU_IceCat and
https://www.gnu.org/software/gnuzilla/. Please confirm.
Think of using "Firefox ESR" rather than just "ESR" in the release news
(example https://savannah.gnu.org/forum/forum.php?forum_id=8233). Also,
"IceCat ESR" may suit in some places too.
--
http://gnuzilla.gnu.org