Comment 7 for bug 584119

I think we should keep the current behavior. Although other tray icons behave differently, they are attached to an application that performs some task in the background.

There's no real need for Onboard to have a tray icon at all. You could just put a launcher for Onboard on the panel and use that to get the behavior you want.

If we were to implement https://bugs.launchpad.net/onboard/+bug/564040 it would probably replace the current window decorations. So the close and minimize buttons would be replaced with something more intuitive.