Comment 10 for bug 546650

I found the upstream commit (gtk+) introducing this regression. Here's the URL to it...

http://git.gnome.org/browse/gtk+/commit/?id=996541d096d4d59e9baa384e5d5359a10567433e

... I'm now taking a look at how to fix that properly. Just reverting that commit is only a quick-fix solution.