[Gimp-developer] File name in status bar but not in window title bar - bug?

[Elle Stone <ellestone ninedegreesbelow com>]

I set both the status bar and the window title bar to display the file 
path and name (%F). The file path and name is displayed on the status 
bar but the window title bar is blank, having just an icon of the image 
in the extreme left corner.
Upon starting GIMP (from git), before opening an image, the GIMP image 
window title bar does say "GNU Image Manipulation Program", so obviously 
it is possible to display text in the title bar. Also all my other 
programs do display text in the title bar.
I usually don't have the status bar visible for reasons of screeb real 
estate. Is the fact that the title bar remains blank a bug? a problem 
with the Icewm window manager (not likely as other programs do display 
text in the title bar)? a case of user error?