>
>
> Thanks, I checked it out on my gtk build; I don't have quite the same
> icon you showed, but it looks like


Different stock icons for "missing icon" I guess.

some kind of place holder that
> shouldn't be there indeed


It's an icon gtk puts by default in a tooltip widget. Usually it's hidden
if you don't set it but show_all is exposing it. The attached python script
shows all this very clearly.