I've taken a bit of case to debug my xfce issue where I'm using notify- osd and it might be a different problem
What's the output of $ gdbus call --session --dest org.freedesktop.Notifications --object- path /org/freedesktop/Notifications --method org.freedesktop.Notifications.GetCapabilities in your environment? In the notify-osd case it's missing the 'action' capability which was the problem but I expect that's probably not the case under KDE -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2056481 Title: [snap] Thunderbird does not support native notifications on KDE Plasma Desktop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/2056481/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs