FL Cloud: drag and drop stopped working

[Polter]

I've been testing out the FL Cloud, which is just fantastic by the way. I love the integeration - it feels very natural. However I noticed that dragging the sample onto the playlist has stopped functioning. I tried closing and re-opening which did not help. It worked fine for the first few samples.
When I attempt to drag and drop onto the playlist now I see the circle with the tick, which I assume means it's part of my library, but it's not in the Downloads folder.
If I right-click the sample in the FL Cloud and select "add to playlist" from the context menu, that still adds it to the playlist successfully.

[Polter]

Actually, it turned out to be my fault. I was t...