Don't know why, my search bar in iOS 7 is leaving a right space. It's ok in iOS 6.
I know it has something to do with the section index, because if I remove it the space disappears, but I don't know how to fix it. Any thoughts?
Until a better answer appears, I just manually changed the frame of the search bar like this:
- (void)viewDidLayoutSubviews {
[super viewDidLayoutSubviews];
CGRect barFrame = self.searchBar.frame;
barFrame.size.width = self.view.bounds.size.width;
self.searchBar.frame = barFrame;
}