I am using Firefox supplied as snap, and overall it works ok, but one major thing that doesn't work is session saving. I have set the option in Firefox to restore tabs and windows on startup, but it never happens. What is worse, is that the History menu does not offer a Restore Previous Session possibility.
Looking in ~/snap/firefox/common/.mozilla/firefox//sessionstore-backups there are files called previous.jsonlz4, recovery.baklz4, recovery.jsonlz4, and some upgrade.jsonlz4- files, so something is saved. I just cannot make firefox load it again.
Firefox does save my windows in the history and allows me to reopen them, but it does not save my session.
If I open History menu and select Manage History, I get a window where I can see the session I want under Import and Backup->Restore-><list of dates, size, and number of items>. But when I select the one I want, I just get a bunch of windows that say:
"No Apps available"/"No apps installed that can open "...ttps://www.mozilla.org/firefox/central/". You can find more applications in Software.
Is this a bug with the snap version of Firefox? It is unusable as a production browser for me in its current state when it loses stuff being restarted.