That screenshot shows that the default-release profile is the one being used, so that handlers.json file is the one to look at.
And the value of "4" for the action corresponding to "application/pdf" is correct, it means "use the system's default handler". >From what I can tell, Firefox calls g_app_info_get_default_for_type() to get the default system handler for a given mime type. Can you share the output of: gio mime application/pdf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1933972 Title: Firefox opens pdf file with Gimp when evince is expected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1933972/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs