> could you also check the debug console in thunderbird and journal to see if there is any error?
This seems relevant (from stdout or stderr when running thunderbird from terminal): [Parent 180849, Main Thread] WARNING: Failed to connect to proxy: 'glib warning', file /build/thunderbird/parts/thunderbird/build/toolkit/xre/nsSigHandlers.cpp:167 (thunderbird:180849): libnotify-WARNING **: 16:34:31.333: Failed to connect to proxy -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/2056481 Title: [snap] Thunderbird does not support native notifications on KDE Plasma Desktop Status in thunderbird package in Ubuntu: Confirmed Status in xdg-desktop-portal package in Ubuntu: Confirmed Bug description: After testing and upgrading, I have discovered that the thunderbird snap does not support native notifications on KDE Plasma Desktop on either Kubuntu or Ubuntu Studio (same packages and desktop, really). This might be an issue with xdg-desktop-portal, so I'm also going to mark it as affected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/2056481/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp
