In Google reader, when you are scrolling through a post with embedded Flash videos, they appear above the frame for a very short time and then moves below the frame when they reach top or bottom of the frame. Steps to reproduce: 1.Subscribe to a feed that has embedded Flash video in Google Reader (ex. http://youtube.com/rss/global/top_viewed_today.rss) 2.Scroll through the posts
In Safari 3.0.4 with WebKit-r28278
Confirmed with r28278. If you load the feed mentioned above and switch to Google Reader's "Expanded View", then scroll rather fast, you can see the trails of all the flash videos. They disappear when you stop scrolling, but while you are scrolling, it looks rather ugly.
As far as I know, this behavior haven't changed. Also confirmed in r27875 but I do not know how it was prior to this build.
Found this one. Dupe? http://bugs.webkit.org/show_bug.cgi?id=11768 Embedded Video within Scrollable DIV / Browser Scrolling
Google Reader no longer exists. :-(