I can confirm adding `StartupWMClass=firefox-beta` in the .desktop file fixes the firefox snap icon in the KDE/Plasma task manager. Thanks!
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/2045820 Title: firefox snap .desktop missing StartupWMClass Status in firefox package in Ubuntu: Confirmed Bug description: this is repost from https://forum.snapcraft.io/t/snap-icons-is-the- firefox-desktop-file-missing-startupwmclass/37400 I have the mozilla stable version installed using the mozilla binary method, and snap for the beta channel. The snap icon is broken, both in the menu entry and in the panel. That is, there is no icon in menu, and the generic cog icon in the panel. This is on 22.04 But I have the same problem in 23.10 and in a VM 22.04. That is, I can reproduce this every time. I did snap remove firefox to uninstall, but this file /home/tim/.local/share/applications/firefox_firefox.desktop remains. So I remove it manually, and reinstall. The desktop file for this is now: /var/lib/snapd/desktop/applications/firefox_firefox.desktop It is called Firefox Web Browser in the gnome launcher, and it has an icon. But after launching, it still uses the generic cog icon in the panel. The context menu from this icon has no actions, except to Quit. If I create a second window, both are associated with this icon, which is good. In the Gnome launcher, if you search for an app and if that app is running, the Gnome launcher indicates it with a dot. However, while this works for the mozilla binary, the icon of Firefox Web Browser (installed with snap) does not show a dot, even though I have two windows from it open. image: see attachment firefox_bug_0.png image: see attachment firefox_bug_1.png Fix? From chatgpt help, I see this: image: see attachment firefox_bug_3.png Add this line to the snap .destkop file, near the top, fixed it: StartupWMClass=firefox-beta Therefore my suggestion is that the .desktop file have a channel- dependent StartupWMClass value set. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2045820/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
