I have a UICollectionViewController subclass embedded in another view controller. It seems that no matter what I do, the collection view shifts its frame upward by 128px each time I rotate the device to landscape. I've turned off "Adjust Scroll View Insets" in both the parent view controller and the (child) collection view controller.
What am I missing? Where should I look to find the source of this mysterious frame modification? I'm all out of ideas myself.
