I can confirm this happening to me in 18.04 Bionic. The icons disappear after lock/sleep. Restarting with Alt+F2 + r makes them reappear.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1712866 Title: icons from qt applications disappear after screen lock/sleep Status in gnome-shell-extension-appindicator package in Ubuntu: Fix Released Status in qtbase-opensource-src package in Ubuntu: Fix Released Status in gnome-shell-extension-appindicator source package in Artful: Fix Released Bug description: [Impact] Indicators of some Qt apps are not showing after unlocking the screen or shell restart. [Test case] - Login to 17.10 - launch dropbox (if not already launched) - Launch telegram (snap version or without libappindicator support) - Observe icons in taskbar - Lock screen with Super+L - Unlock screen - Icons should still be there [Possible regressions] Icons that should be hidden could be visible instead The fix doesn't apply to snapped applications In the Ubuntu Xorg session, with the Ubuntu Appindicator extension enabled, the tray icons for QT apps (in my case, both owncloud-client from the Ubuntu repos and enpass, from their own repo) show up after first logging in. But once the screen has been left idle long enough to be put to sleep, and is then woken up (I don't actually have screen *lock* enabled, but it still goes comes back to the clock screen and a further gesture is needed to scroll that up to get the desktop), then the icons for those QT apps are gone. Non-QT apps (eg: in my case hexchat, from the ubuntu repos) remain. For a while and due to inattention it seemed more random than that, but I'm fairly sure now it's just the display sleep/wake thing that kills it. The applications are still running in the background (so for instance enpass is still available via the browser extension), and can be seen in the process list. It's just the icons that have disappeared. If I then kill those apps (from the commandline with 'kill [pid]' because there's no other interface to do it from) and relaunch them, they reappear back in the appindicator area. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell-extension-appindicator 17.10 ProcVersionSignature: Ubuntu 4.12.0-11.12-generic 4.12.5 Uname: Linux 4.12.0-11-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.6-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Aug 24 17:12:43 2017 Dependencies: InstallationDate: Installed on 2017-07-30 (24 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412) PackageArchitecture: all SourcePackage: gnome-shell-extension-appindicator UpgradeStatus: Upgraded to artful on 2017-08-22 (2 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-appindicator/+bug/1712866/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp