I use a website to check TV listings in my neighbourhood. I noticed that the scrolling list of stations is incomplete when I view it via Webkit but is complete when viewed with Safari (and other browsers). The URL is http://tvlistings5.zap2it.com/tvlistings/GridAction.do and I click on the Favorite Channels link to add/remove channels to the window. I will screenshots of the two lists.
Created attachment 12059 [details] Webkit incomplete list
Created attachment 12060 [details] Complete list in Safari
I can reproduce the bug. If I scroll down the list box, I can see the additional channels, but the list box doesn't use its entire height for displaying the options.
Created attachment 12478 [details] Reduction
Created attachment 12481 [details] patch that fixes this problem and some others
Here's one of the other bug numbers: <rdar://problem/4901834> REGRESSION(NativeListBox): Focus is not placed on SELECT after mousing down on OPTION http://bugs.webkit.org/show_bug.cgi?id=12008
<rdar://problem/4940442>
Patch landed by Darin in r18989.