Minimising window with "Always on top" attribute leaves contents in underlying window

[Jack Tanner]

Mike Parker wrote:
> I'm using 4.3.0-42 and have noticed that the following minor bug in
> multi-window operation when running on Win2K and WinXPPro:
> 
> Two windows (terminal or otherwise) are overlapped and the topmost one has
> it's "Always on top" attribute set (by right-clicking on the windows title
> bar). The topmost window is then minimised, leaving a copy of its contents
> on the desktop, viewable by moving the remaining window over the portion of
> the desktop previously occupied by the other window.

Confirmed.

Does anyone know how other window managers usually handle the 
always-on-top-then-minimized use case?

-JT