Just experienced the most ridiculous Android FAIL ever.
You know the PIN entry screen on boot, for unlocking disk encryption, right? I rebooted my phone and… the bottom row of the PIN keyboard — the one with the “OK” button — was not usable! Touching anywhere on the bottom row instead was opening the notification center (!!!) which was only visible through a small frame at the top of the screen, same height as the top bar usually is. The unlock icon was also visible on the top of the keyboard.
I took screenshots but they weren’t saved :D I guess it just showed the screenshot animation but couldn’t save it anywhere because of the disk encryption.