I set FireFox to automatically save PDF links. Also I disabled the annoying downloads pop-up. When I click on a link, though, the screen briefly flashes white. The cursor stays in-place, so I can work under this condition, but it's an annoying distraction. Especially since nothing is being opened, so I'd expect the FireFox view to just stay as-is.

I've seen postings complaining about their blackscreen-themes flashing white when they do this. If I read right, the posted solutions were just to flash black instead of white. That's not what I'm trying to do here, I want to suppress the flash.