Drag and drop between collection views with UICollectionViewDiffableDataSource throws assertion failure

I'm using the

UICollectionView

This works as expected when dragging a cell within its original collection view, however, when I drag this cell over another collection view I get the following:

... *** Assertion failure in -[UICollectionView _updateRowsAtIndexPaths:updateAction:updates:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKitCore_Sim/UIKit-3901.4.2/UICollectionView.m:6265

Event with its simplest implementation for

dropSessionDidUpdate:

func collectionView(_ collectionView: UICollectionView, dropSessionDidUpdate session: UIDropSession, withDestinationIndexPath destinationIndexPath: IndexPath?) -> UICollectionViewDropProposal { return .init(operation: .move, intent: .insertAtDestinationIndexPath) }

This always happens when the operation is

.move

.copy

to my understanding this should "just work" and

dropSessionDidUpdate:

It's worth also noting the collection views all use the same code (each a UICollectionViewController of the same type).

Update 1

This seems to "work" when returning

.init(operation: .move)

intent

Update 2

As above, this also works when returning

.init(operation: .move, intent: .insertIntoDestinationIndexPath)

.init(operation: .move, intent: .unspecified)