Another "Waiting to transfer" download failure mode - duplicate download attempts

[maximumentropy 38]

Emby Windows, 2.315.2.0

Download a movie or video.  I used "Original" quality for my tests.

Wait for the download to complete successfully.

Download the *same* movie or video.

The second download shows in "Manage Downloads" as "Waiting to transfer" and stays that way.  No new download takes place and no progress bar is shown in Downloads>Settings.  No new entry shows in BITS manager.

After deleting the original completed download and restarting the client, the new download progresses normally and completes.

Expected behavior:  No new entry should be created in "Manage Downloads".  A warning or error could be displayed stating that the item was already downloaded, though for some use cases (e.g. multi-select) I'd prefer it if the duplicate downloads were just silently skipped and ignored.