Issue with Storyline 2 drag and drop - drop targets are movable

Hi,

Can anybody assist please, I'm having a issue with the drag and drop feature of Storyline 2 (12.1705.520).

So I have a drag and drop where you drag a key to a lock and it will unlock that layer of the slide.

I have noticed when previewing (and publishing) the slide, you are able to move the drop target - this has never happened before. Is there a reason for this happening? I have set the keys as the drag items and the locks as the targets.

See the attached file to see what I mean.

Thanks in advance!

David