After r18951 (the fix for "flashy" selection in textareas), if you select some text in a textarea the page scrolls up. You can try this here in Bugzilla: 1 - Scroll down (a scroll bar must appear in the window). 2 - Type something in the textarea and select it. 3 - The page scrolls up. I have found this bug using a trackpad, so I'm not sure it's the same with a mouse. If it's trackpad-specific, it may also be related to bug 10747.
Not trackpad specific, happens with my mouse too.
*** Bug 12348 has been marked as a duplicate of this bug. ***
Also happens in text fields.
Created attachment 12591 [details] patch, no change log or layout test (can someone write a test?)
<rdar://problem/4944774>
Comment on attachment 12591 [details] patch, no change log or layout test (can someone write a test?) r- for lack of test case. Probably possible to make one with eventSender.
Created attachment 12648 [details] beginning of layout test I started this layout test. But I just can't seem to trigger autoscroll with the eventSender.
Created attachment 12658 [details] patch, this time with change log and layout test
Committed revision 19102.