I very often use the search box on the osm main website. If there are more results than fit on a page it used to scroll. Now, today, after the (lovely) new map UI has gone live, they do not scroll at all. I presume that this regression happened during the UI overhaul.
I can prove to myself that the content should scroll, by pressing Ctrl-minus to shrink the text. Lo and behold there are more results creeping in from the bottom.
(I'm on Ubuntu 11.10. Tested on Firefox 20.0 and Chromium 25.)
I can confirm this on Chromium 28.0.1500.89 on Gentoo Linux.
Fix scrolling in search sidebar (fixes #353)
Fixed by merging #354.