When I download a file, if I try to open it or it's containing folder all I get is the Launch Application dialog asking me to choose an application. No applications are listed for me to choose from and if I select 'Choose other Application' it only lets me choose my own applications, not system ones (e.g. nautilus). This is a change from 18.04 which worked as expected. I assume its some kind of security/privilege issue but have no idea what to do about it. This is the snap version of firefox:
rod@Isildur:~$ apt policy firefox firefox: Installed: 76.0+build2-0ubuntu0.20.04.1 Candidate: 76.0+build2-0ubuntu0.20.04.1 Version table: *** 76.0+build2-0ubuntu0.20.04.1 500 500 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 75.0+build3-0ubuntu1 500 500 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 Packages rod@Isildur:~$ snap list | grep -i firefox firefox 76.0-2 355 latest/stable mozilla* -
Checked it out today with 76.0.1 and its still the same. I've removed the snap and it now works properly.
If anyone else wants to remove the snap I suggest snap remove --purge firefox to avoid making a huge snapshot.
Beware though, this will lose your open tabs, bookmarks, history. The snap seems a bit of a mess really.