After I launched some program I need from an app image, it starts every time I log into system.
Going by Windows logic, there may be some menu or a queue that lists all apps that start after logining in with an option to disable it.
I’m struggling to find anything like that.
Depends on your desktop environment. Look for an “autostart” or “startup applications” setting. If you’re on KDE, this could also be caused by “Restore previous session” under Settings -> Startup and Shutdown -> Desktop Session.
It was ‘Session and Startup’ in Xfce. Thank you.