They're also deleting downloaded .pdf whilst in private mode. Yes even when I click save as. It gets downloaded to my downloads folder and then sometimes it's deleted when I close the browser. Sometimes.
That being said, I hate it, it's awful UX. If something is in the "Downloads" folder, it should never be automatically removed, it's not "Temp".
Not to mention that there's absolutely no indication in the UI that your downloads will be deleted. Also, there's no obvious way to make the downloaded file permanent, other than manually copying it outside the "Downloads" folder.
I use private browsing when doing legal work so an errant Google session doesn't hoover up anything it shouldn't, and I've had so many random documents and briefings just disappear that I'd convinced myself that I was just mistaken about saving them.
Oh, so that's why some files sometimes are auto-forcibly-downloaded into the usually-unused download directory which I had named ~/Downloads/wtf-firefox/ for now-obvious-but-previously-noticable "what the fuck" reasons. Didn't know that it was being emptied behind my back though!
That being said, I hate it, it's awful UX. If something is in the "Downloads" folder, it should never be automatically removed, it's not "Temp".
Not to mention that there's absolutely no indication in the UI that your downloads will be deleted. Also, there's no obvious way to make the downloaded file permanent, other than manually copying it outside the "Downloads" folder.