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This does seem odd, on my Ubuntu system Telegram launches immediately. Could you paste (or pastebin) the output of the following commands? $ apt policy bubblewrap flatpak $ flatpak run -vv org.telegram.desktop And also in the last command indicate exactly where it gets stuck ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829269 Title: Flatpaks using org.kde.Platform take minutes to launch on Kubuntu 19.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/flatpak/+bug/1829269/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs