On the URL, or another YouTube video from a user that has uploaded more than one video, there is an “n videos” button above the video. In TOT, clicking the button changes the direction of the chevron, but doesn’t reveal the other videos from the same user. In Safari 5 the button works as expected.
Caused by <http://trac.webkit.org/changeset/62215>.
*** This bug has been marked as a duplicate of bug 41622 ***