Steam not docking properly in KDE

[MightyPork]

I am running the latest Steam in Kubuntu 12.04.

I have noticed that steam creates a dock icon, which would be fine: if it worked.

*** What it should do ***

When I close the Steam window, it should leave the taskbar and continue running in the background, and when I click the dock icon, the Steam window should re-appear in the current desktop (and current activity, of course).

*** What it really does ***

When I close the Steam window (with the cross button), it GETS MINIMIZED.
It then stays in the taskbar, taking up precious space. As a matter of fact, it is visible in all plasma activities at once, which I have not seen in any other application.

Left-clicking the dock icon DOES NOTHING, the window stays minimized. It should un-minimize and appear in the active desktop.

[gdrewb-valve]

Duplicate of #1025. The current messy behavior is a deliberate workaround for some problems with indicators.

The behavior when clicking on the dock icon is up to the window manager, Steam doesn't run that icon.