Finally I found it! It works with .torrent files and this is what I needed most!

Elated to find this replacement for the Inline Disposition addon that apparently was updated for 57, but simply does not work. Thank you so much!

Avast is warning that this is a unreputable browser addon. I have no idea how they make this decision, though it might be worth looking into.

I've had no problems with the extension otherwise. Great addon.

Actually a working addon for FF 57+ which fixes non-working "always do it files of this type" bug.