And then I click "Restart Firefox"... and Firefox closes... and... nothing. Re-open Firefox manually... and hopefully it remembers my tabs (sometimes it doesn't).
@brwyatt Do you have Firefox installed via your package manager? My understanding is that this may lead to this issue, else you shouldn't see this.
To my understanding that "overriding" happens when Firefox tries to spawn a new process and the new process is running the new version. There is currently no way to assert compatibility between old and new content processes, so Firefox tells you that it can no longer display webpages (and you should restart). I am not familiar enough with chromium to know how it handles this case.
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