Missed this one. Damnit now I'm doing a quad post QQ. zzz well funny thing is its not actually picking up legendarys. Its for some reason seeing the regular items as legendary and picking them up, I've picked up several legendaries and they get stashed just fine. So what you're seeing is just a false number thanks to the picking up of normal items. You'll notice that after a day of running, you'll have an unbelievable amount of legensary pickups according to the miniwindow ^_^ which is just false.
That was directed at phil, thanks to the phone for not quoting properly.
~Don