I have tested a few backends (TkAgg, WX, QtAgg, GTK and
> GTKAgg) and am only seeing it on GTK and GTKAgg. My guess
> is that something ou did in adding the resize functionality
> to GTK is triggering this. You might want to look at a diff
> between the current svn and revision 2627 to see if you can
> find the source of this.
Scratch that -- I reverted to 2627 and still see it...