HandleBox woes

[Michael Ekstrand <mekstran scl ameslab gov>]

I've got a toolbar that's in a handlebox.  However, when I drag the  
toolbar to be floating, the window shrinks down and all the toolbar  
items are placed in a drop-down menu on the now-floating toolbar.   
I've tried marking my toolbar items as important, but that hasn't  
changed anything.

Why might GTK be doing this, and what do I need to look at to get the  
handlebox to behave properly?

- Michael