I'd never tried scrolling that far into search results thanks to the awful layout.
I just tried, and you're right, it stops at 24 on iPhone 4S and 25 on ipad 2.
I searched for "golf".
Wow Apple, I though it was just a style thing, and I'd eventually get used to it, but its actually broken. That's bad.
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I just tried again and got to result 25 on iPhone, but now can only see the last 3 items. Everything is blank before that, and the x of xx display isn't updating.