ARMHF Firefox crashes when receiving passwords via Firefox Sync

[Timothy Baldwin]

Also tested on 20.04.2 LTS (GNU/Linux 5.10.34+ aarch64) on AWS.

1. Install ARMHF Firefox package (ARM64 and x8-64 packages work correctly).
2. Create new profile
3. Sign into Firefox Sync (with at least one password saved in sync account)
4. Within a few minutes Firefox crashes with a Segmentation Fault.

If started with a synced profile, it is stable until a password is added or changed in the sync account by another instance of Firefox, after which it shortly crashes.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: firefox 89.0.2+build1-0ubuntu0.21.04.1
Uname: Linux 4.14.213-teb6 armv7l
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: armhf
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tim 1338 F.... pulseaudio
BuildID: 20210622155641
CasperMD5CheckResult: unknown
Channel: Unavailable
CurrentDesktop: KDE
Date: Wed Jun 30 13:33:23 2021
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 # Include files from /etc/network/interfaces.d:
 source-directory /etc/network/interfaces.d
IpRoute:
 default via 10.211.92.1 dev wlan0 proto static metric 600
 10.211.92.0/24 dev wlan0 proto kernel scope link src 10.211.92.19 metric 600
 169.254.0.0/16 dev wlan0 scope link metric 1000
Lspci:

PciNetwork:

Profile0Extensions: extensions.sqlite corrupt or missing
Profile0IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile0Locales: extensions.sqlite corrupt or missing
Profile0PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:355
Profile0PrefSources: prefs.js
Profile0Themes: extensions.sqlite corrupt or missing
Profile1Extensions: extensions.sqlite corrupt or missing
Profile1IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile1Locales: extensions.sqlite corrupt or missing
Profile1PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:355
Profile1PrefSources: prefs.js
Profile1Themes: extensions.sqlite corrupt or missing
Profiles:
 Profile1 - LastVersion=89.0.2/20210622155641
 Profile0 - LastVersion=89.0.2/20210622155641
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: Upgraded to hirsute on 2021-06-12 (18 days ago)