[Bug 1892373] [NEW] Firefox crashes on logout

[Mike Jing]

Public bug reported:

Every time I logout or shutdown the system with firefox open, it will
generate a crash report in about:crashes. However, there is no crash
dump in /var/crash.

I noticed this before I upgraded from 18.04 LTS recently, and at first I
thought the crash went away after the upgrade, but sadly it's not the
case.

I've tested with a fresh new user, with the same result. I'm running
Xubuntu 20.04.1 LTS.

This may be the same bug as bug #73536 ( Mozilla Bugzilla #336193), but
I can't be sure.

To reproduce:

Open firefox. Logout with firefox window open. login again and check
"about:crashes" in firefox.

The output of:

lsb_release -a; uname -a; apt-cache policy firefox

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
Linux celia 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
firefox:
  Installed: 79.0+build1-0ubuntu0.20.04.1
  Candidate: 79.0+build1-0ubuntu0.20.04.1
  Version table:
 *** 79.0+build1-0ubuntu0.20.04.1 500
        500 http://mirror.csclub.uwaterloo.ca/ubuntu focal-updates/main amd64 Packages
        500 http://mirror.csclub.uwaterloo.ca/ubuntu focal-security/main amd64 Packages
        100 /var/lib/dpkg/status
     75.0+build3-0ubuntu1 500
        500 http://mirror.csclub.uwaterloo.ca/ubuntu focal/main amd64 Packages

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Firefox crashes on logout

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