Attempting to open a deleted torrent file from Firefox causes GUI lockup by dialog box spamming.

[R0b0t1]

I used Deluge's GUI to delete a torrent and its backing storage. Some time afterwards I clicked the torrent file in Firefox's download history and Deluge was launched. "Duplicate Torrent" error message boxes appear over the "Add Torrent" window, based on the shading in the picture many are active at once. It is impossible to close them by hand and I had to forcefully exit Deluge. The torrent did not already exist in Deluge (verified by launching it from the Start Menu entry and seeing an empty torrent list).

Unfortunately the above description may be missing some details, I launched Deluge by accidental keyboard mashing.

[R0b0t1]

Screenshot of problem.