Not sure if it’s something I’ve done or a recent change, but specifically with the show Jeopardy! (note the ! which is part of the title and causes all kinds of other issues). In some cases it’s done this 18 times in a row now. From what I can tell it just keeps replacing with the exact same download, same quality, etc.
The only change I’ve made recently is to turn off the NZBDrone folder on the advice of Markus here: https://github.com/Sonarr/Sonarr/issues/935
But I’m sure this has been going on much longer than that. Here’s an example of my recycle bin folder showing multiple copies of this. Not sure if this is a bug or if something else is going on or if the ! is causing issues (it plays havoc with Transmission currently – it dupes itself over and over again there)