Oh, that's intentional? I had no idea what was going on and am just now realizing I haven't had a weird bug or something this whole time.
edit: just remembered because it happened again. I'm not sure if it's related but I often find now that when I type "n" the bar doesn't autocomplete "ews.ycombinator.com" with the rest of the text highlighted anymore. It still goes there if I hit enter, though.
I noticed this after upgrading my OS and thought something horrible had happened. Turned out to be true but it was intentional by Mozilla. If it's not broke, break it I guess.
edit: just remembered because it happened again. I'm not sure if it's related but I often find now that when I type "n" the bar doesn't autocomplete "ews.ycombinator.com" with the rest of the text highlighted anymore. It still goes there if I hit enter, though.