I have attached the log file for the qt5 case in which icon doesn't appear.
I do have appmenu-qt5 package installed and i am using unity 7.4.0 ** Attachment added: "Qt5 systray log" https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1574542/+attachment/4647409/+files/qt5systray.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574542 Title: QSystemTrayIcon doesn't work correclty on 16.04 final release To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1574542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs