Firefox 83.0 snap was* broken (fixed square fonts)

Hello everyone

Original problem:
I think the Firefox snap is broken, something happens with an update (I guess), now the snap does not work, already try the latest/stable channel with 83.0-2 and the channel esr/stable 78.5.0esr-1 both crashes with the following error:

firefox_error

Yesterday the FireFox snap was working great, now just crash, does anyone else have this problem with the latest/stable channel or the esr/stable?

Edit (FIX):
I manege to fixed following this https://askubuntu.com/questions/1224125/font-characters-displayed-as-squares-in-ubuntu-18-04

I just uninstall the snap then I update local font cache and that fixed for me.

I would leave this here, maybe someone face the same problem.

how fonts get corrupted like that even without the user doing anything?

Glad you found a workaround for the problem Eduardo.

You are right, this issue is concerning and should definitely not happen when the snap is being updated without user intervention. I wonder whether this was caused by the snap being refreshed while it was running? If so, that would be yet another symptom of bug #1616650, which can be mitigated by turning on the Refresh App Awareness experimental feature.

In any case, let’s keep this thread open, in case others stumble upon the same problem.

Ooooooh YES it’s a somewhat usual snap issue, that happens periodically!
Last one for me:


So sometimes it’s easy to see this issue to be fonts-related, sometimes not…

Yes indeed, actually the first time that happened to me was with the snap store (Ubuntu store) its self, in that moment what I did was to re-install Ubuntu from scratch, but now that I’m using Ubuntu as my personal daily drive that’s not an option, I think its a problem really difficult to fix if you are a “regular” no technical savvy users, because the usual IT procedure of uninstall and reinstall the snap (firefox in this case) does not fix the problem, you rely in using at least 2 commands from the terminal that are a little cryptic so its not ideal, this plus you don’t really have a notification o something that indicate than a snap its updated make it more difficult to track was happen.

this are just my thoughts as a really new user to Ubuntu and Linux by proxy.

Indeed, the fact that an application can be updated under your feet while running is counter-intuitive and not user-friendly, and the consequences can be nasty.
My understanding is that the plan is for [WIP] Refresh App Awareness to be turned on by default in the near future, thus largely mitigating the problem. I don’t know the exact date though.

That is great, because now my “normal” procedure when using my Ubuntu laptop is check all the updates before start using the machine for work, once I check all the updates, l feel safe to start using all the snaps that I love!