Created attachment 649963 [details] testcase Open the testcase, see horizontal scrollbar. We didn't use to have one. Might be Linux only. The first bad revision is: changeset: 101294:b5e444664a6c user: Markus Stange <email@example.com> date: Fri Aug 03 12:35:14 2012 +0200 summary: Bug 770453 - [b2g] Semi-transparent scroll bars should not occupy content-flow space. r=roc
Created attachment 651535 [details] [diff] [review] patch Looks like the argument was in the wrong spot accidentally, meaning we got the min size where it was intended for us to retrieve the pref size.
Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/17.0 Firefox/17.0 Verified with Ubuntu Unity and XFCE (with the help of lcamacho). Firefox 17 beta1