How to make the [email protected] icon in the system tray not disappear under Linux (KDE 4)?

Question

linux

After authorization, the [email protected] application window disappears.
Using pgrep you can see the pid of the process. The application is working.
But it is impossible to manage it and find out information about the current synchronization status due to the fact that it is hidden.
Logically, it should be in the system tray, but it's not there. I use gentoo and 2 monitor configuration.
Tried to uncheck "place in the system tray" in the launch shortcut - it doesn't work.