[jello1717]

You're definitely not the 1st to see this and no, it's not caused by a CPB (I've had the CPU do it to me before and they used a default PB).

I think it's caused by an alignment issue (which only happens in no huddle). I've seen it before where an OL will line up slightly off from where he's supposed to be so that he can't put his hand in the dirt (because his avatar will clip another player's avatar) so the QB will just stand there waiting for him to get set until the play clock runs out.

For your issue with the center keeping the ball, I think in this case the QB's alignment is off and he's not exactly behind the center like he's supposed to be so the center's program code can't snap it to the QB so he just keeps it. I'm not positive about this, but in the 3 or 4 times I've seen this, that seemed to be the case, but of course it's not something that I can set up and test since I never know when it'll happen.