I'm running the Firefox v123 snap on Ubuntu 22.04. When starting in normal mode, the browser is not rendering webpages. I get a translucent window with confused mesh of pixels from the web page it should be rendering.
Starting from console reveals an error message when parsing gtk.css.
~$ firefox --safe-mode[Parent 29743, Main Thread] WARNING: Theme parsing error: gtk.css:1:21: Failed to import: Error opening file /home/emma/snap/firefox/3941/.config/gtk-3.0/colors.css: No such file or directory: 'glib warning', file /build/firefox/parts/firefox/build/toolkit/xre/nsSigHandlers.cpp:187(firefox:29743): Gtk-WARNING **: 13:49:17.909: Theme parsing error: gtk.css:1:21: Failed to import: Error opening file /home/emma/snap/firefox/3941/.config/gtk-3.0/colors.css: No such file or directoryGtk-Message: 13:49:17.924: Failed to load module "window-decorations-gtk-module"Gtk-Message: 13:49:17.925: Failed to load module "colorreload-gtk-module"This version of firefox snap works in safe-mode when started from the console.
I have tried:
- Changing the theme without logging out but this has no effect.
- Removing and reinstalling the snap
- Changing which profile via the ProfileManager in safe-mode
- Loading an older version, which worked for a reason I cannot guess.
- Searching the root directory for a file named colors.css, which returned some old files called public-colors.css
Firefox was starting reliably until a week or so ago. I do not know when Firefox v123 was loaded by snap from the latest/stable channel.
- Is this a known bug?
- Has it been reported on the Mozilla Bugzilla?
- Is there a fix or workaround?