Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20041004 Firefox/0.10 When a webpage uses <meta http-equiv="MSThemeCompatible" content="no" /> the arrows in the scrollbar are misrendered. See testcase.
Created attachment 161666 [details] Testcase Dont know if this is related, but this is another example where a dropdown arrow is mis-rendered. This one also works fine on trunk.
I am not sure how serious this bug is and exactly what XUL apps it affects. But will request blocking so that it can be determined as blocker or not.
Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.3) Gecko/20041009 Firefox/0.10 confirming both cases
Your first testcase is Bug 247161, the other one is Bug 250355. *** This bug has been marked as a duplicate of 247161 ***