Summoner's Rift bugs

First of all I'd like to say a great job on the new map, I especially like the timer you have before you can move. But like all great things there is flaws. So I'm gonna tell you some of the bugs I have found in the rift. Feel free to post your encounters with bugs here also.

1. The Gromp (east) doesn't show an attack animation until its 3/4 dead.
2. The nexus flashes and then explodes at the end.

Tell me if these bugs have happened with you guys as well, I would love to know.