"Download an external file type" doesn't work as expected

I clicked a pdf file in hardened tor browser (a6--I don't see it in "versions") and got a popup warning of the dangers of downloaded files. OK. I clicked "Automatically download files from now on" and "download" and the very next screen asked me whether to open or download. I already told it to always download! And that's what I want, and I can click another "always" button there to fix it for pdfs, but now I have to do that for every file type I see (the preferences have no way to set download as default). Worse, "open" is the default and I consider that dangerous.

Either the text needs to be changed to match the real behavior (in that case please add some option to bypass the open/download dailog) or the "always download" box should do what it says. In any case I don't think "open" should be the default on the next screen.