Right, here's a pretty big, annoying bug that I found.
This guy slept both my Politoed and my Jirachi. Politoed was slept first, and never woke up since I didn't use him any more. But he also managed to sleep Jirachi while Politoed was also still asleep, thus violating Sleep Clause. As far as I'm aware this has only been tested in Ubers and not in OU. Can someone please explain this? As you can see, Politoed was sept on turn 4, and on turn 28 Jirachi was also slept.