I just discovered https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/2021523. This bug might be a duplicate of that one, but I'm not sure whether the dialogue behavior is a gstreamer issue or due to another project (totem/snapd/etc). For now I'll add gstreamer to this issue and let someone who knows the components better decide whether this bug report should be marked duplicate.
** Also affects: gstreamer1.0 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2070804 Title: Gnome videos (Totem) cannot play mp4, snap store installer broken To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer1.0/+bug/2070804/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs