[snap] firefox crash: adding native font failed: file=/usr/share/fonts/truetype/ubuntu/Ubuntu-R.ttf err=1

[Lacyc3]

Hello,

I'm having regular snap packaged Firefox crashes since 2022-03-14 (Nightly from upstream is stable).

According to the Mozilla crash report service, Firefox cannot find Ubuntu-R.ttf font file:
MOZ_CRASH Reason (Sanitized): adding native font failed: file=/usr/share/fonts/truetype/ubuntu/Ubuntu-R.ttf err=1

Affected Firefox versions: 97.0.1, 97.0.2, 98.0, 98.0.1

snap info firefox:
snap-id: 3wdHCAVyZEmYsCMFDE9qt92UV8rC8Wdk
tracking: latest/stable
refresh-date: yesterday at 13:31 CET
installed: 98.0.1-2 (1115) 162MB -

lsb_release -a:
Distributor ID: Ubuntu
Description: Ubuntu Jammy Jellyfish (development branch)
Release: 22.04
Codename: jammy

Mozilla crash reports:
- https://crash-stats.mozilla.org/report/index/c04b40e7-04fc-4c62-9e76-b651d0220314
- https://crash-stats.mozilla.org/report/index/980ff557-a770-44e4-b735-f09260220314
- https://crash-stats.mozilla.org/report/index/980ff557-a770-44e4-b735-f09260220314
- https://crash-stats.mozilla.org/report/index/35fcad7b-9e1f-41fa-9c35-02eaa0220314
- https://crash-stats.mozilla.org/report/index/547b9770-3211-43c3-8251-d105f0220315

[sir phobos (sir-phobos)]

i believe it's not a duplicate
this exact crash happend to me 2 times on snap 98.0.1-2
first time firefox crashed after ~2 days of work
second time - after around 5 days of work
no clear way to reproduce the crash found.

there were no snap updates during the work of firefox both times.
currently switched to snap 98.0.2-1, waiting to see if crash happens again

ubuntu 20.04.4 LTS
5.13.0-35-generic

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[sir phobos (sir-phobos)]

following up just in case: since the switch from 98.0.1-2 crashes never happened