I've assigned restorationIdentifier to subclass of UICollectionViewCell
When app moves to background encodeRestorableState(with coder: NSCoder)
got called, but when app restores decodeRestorableState(with coder: NSCoder)
is not called.
I've tried to assign restorationIdentifier to UICollectionView but it doesn't help too. What should I do to make it work?