Dragging over a Subdiagram Label breaks drag-and-drop from Project Explorer

This bug has proven to be perfectly repeatable on my system. I'm using the LabVIEW Core 3 Course Project to reproduce:
1. Open the block diagram of a VI with while loop or case structure whose Subdiagram Label is visible.
2. Drag a VI or control from the project explorer onto the block diagram.
3. Drag the VI over a Subdiagram Label, then away from it.
RESULT: Object is ready to be dropped until you drag over a Subdiagram Label; after this the object cannot be placed, as though it is always in an invalid location. See attached pictures.
I'm using LV 13.0f2
Ryan R.
R&D
Attachments:
1 - drag VI onto block diagram.png ‏11 KB
2 - drag VI over Subdiagram Label.png ‏11 KB
3 - drag VI away from Subdiagram Label.png ‏11 KB

Sorry for the delay, I was out teaching for a while.
I have filed CAR 449383 documenting this issue.
Regards,
Craig H. | CLA | Systems Engineer | National Instruments

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