Inconsistency when dragging a sequence into a Master Sequence

Inconsistency when dragging a sequence into a Master Sequence

1. Create two sequences (Seq1 and Seq2)
2. Add a camera and camera cut track to Seq2
3. Open Seq1
4. Drag Seq2 into Seq1 (Result: Shot track created with Seq2)
5. Delete the shot track
6. Add an empty SubSequence track and drag Seq2 in again (Result: Seq2 added to subscene track)
7. Delete Subsequence track
8. Add both an empty shot track nd empty SubSequence track
9. Drag Seq2 into Seq1

Result: A spawnable Sequence actor is created
Expected: In each case, a shot track is created or it is added to the existing shot track when dragged into blank space in the sequence. If it is dragged onto a sub-sequence track, then it should be added to that track