I've arrived here from https://github.com/telegramdesktop/tdesktop/issues/28156 after experiencing the issue with telegram.
I installed the fix from proposed. The problem is solved: now telegram works. ** Bug watch added: Telegram Desktop Github Issues tracker #28156 https://github.com/telegramdesktop/tdesktop/issues/28156 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2072811 Title: Apparmor: New update broke flatpak with `apparmor="DENIED"` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2072811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs