Is there an alternative source for non-snap Firefox?
snapd is the first thing I nuke on fresh installs. I would like to stay with Ubuntu, if possible.
The deb package remains available in the archive and will continue receiving updates for the lifetime of Ubuntu 21.10.
I've been using the Debian packages supplied by Ubuntuzilla (despite their being hosted on gag Sourceforge): https://sourceforge.net/projects/ubuntuzilla/
Re: terrible look, I face the same thing with Telegram (the mouse reverts to whatever is the default in Qt and ignores the system settings). I haven't been able to fix that.
sudo flatpak override --env XCURSOR_THEME=DMZ-White
mkdir -p ~/.icons/default/cursors/
cp -R /usr/share/icons/DMZ-White/cursors/. ~/.icons/default/cursors/I use Ubuntu and I sometimes install Debian Sid packages by downloading them in a browser and installing them with dpkg.