>isn't this supposed to download files with the original name instead of opening it in the new tab?
That's correct, but it b0rked when our images were moved to i.kncdn.org a year or so ago - this is thx 2 increased browser security preventing downloads from being initiated when they're from a different URL to the one you're currently on

I believe it's on the list of things to resolve, but I don't have any details/updates