Looks like I'm a couple years late, but I'm having this problem too. The Search Bar, at the top of the song list in the Songs tab, "disappears". Well, it doesn't really disappear, if I scroll to the top of the list, it is there as usual, but when I release the drag to touch the box, the Search Bar scrolls back off the top of the screen. Tried scrolling, holding and clicking with the other hand, but the box is not active.

Using a 1st Gen iPad w/ iOS 5.1.1 and iReal Pro 5.0.4