iOS13 UICollectionView not respecting size returned in delegate method for cell

Question

In iOS13, i return

- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
   return collectionView.bounds.size
}

but the displayed cell is hugged horizontally and not fullwidth... this wasn't happening before

is there any change that is responsible? why is this happening?

Answer 1

In interface builder, set Estimated size to 'None' from 'Automatic'