NSWindowController ? bug

[Enrico Sersale]

It seems that all the apps that use NSWindowController don't display a window 
for a document opened after the first one (the document opened launching the 
app).

An example, due of my bad English :-)
get a NOT document-based application as, for example, ToyViewer or ImageViewer.
- try to "gopen" a file
the app is launched and a window is created
- now "gopen" an other file
also in this case a window is created

now get an app that uses NSWindowController
- try to "gopen" a file
the app is launched and a window is created
- now "gopen" an other file
no window!

Well, the window exists, but it is not shown.
This behaviour is visible, for example, in Gorm and in Terminal, trying to open a new 
terminal window with the "Open shell here" service.