I get that occasionally, it just happens again in the emulator on current utopic:
sudo apt install ubuntu-emulator
sudo ubuntu-emulator create --arch=i386 --channel=devel-proposed devel-proposed
ubuntu-emulator run devel-proposed
go through the wizard: keep English, select PIN, enter 0000, accept defaults all the other stuff
wait until greeter appears, skip intro
swipe away the greeter
Find the "Hello <input box>", which is a bit awkward for PIN entry
I reproduced that two times now (with a freshly created emulator).
I get that occasionally, it just happens again in the emulator on current utopic:
sudo apt install ubuntu-emulator devel-proposed devel-proposed
sudo ubuntu-emulator create --arch=i386 --channel=
ubuntu-emulator run devel-proposed
go through the wizard: keep English, select PIN, enter 0000, accept defaults all the other stuff
wait until greeter appears, skip intro
swipe away the greeter
Find the "Hello <input box>", which is a bit awkward for PIN entry
I reproduced that two times now (with a freshly created emulator).