Given that this stopped working for you exactly in 117.0.5938.149, which included some related changes (e.g. changing the default XDG_DATA_HOME), one of them is probably affecting you here.
But before we continue, please clarify this: You only notice it not only in the stderr log but also in the user interface itself, which doesn't use your custom theme, as it did before that release, right? > $HOME/.config/gtk-3.0/settings.ini does not exist. How do you set your theme? Can you confirm that ---> $ readlink $HOME/snap/chromium/current/.local/share/themes /snap/chromium/XXXX/data-dir/themes <--- and that ---> chromium file:///snap/chromium/current/data-dir/themes <---- lists a bunch of theme directories? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/2038727 Title: Chromium snap theme parsing error Status in chromium-browser package in Ubuntu: Incomplete Bug description: Chromium Version 117.0.5938.149 (Official Build) snap (64-bit) not following my GTK theme. Starting the Chromium snap from the terminal yields a theme parsing error: (chrome:95638): Gtk-WARNING **: 11:01:12.220: Theme parsing error: gtk.css:1:0: Failed to import: Error opening file /home/aej/.local/share/themes/Adwaita_modified/gtk-3.0/gtk.css: Permission denied Previous versions of the Chromium snap have not had this problem. Debian 11 + XFCE. I have been running the chromium snap for about two years without an issue like this on this system. I have reverted to the previous version of the chromium snap. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/2038727/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp