Creatures coming out of play with 0/0....

[Tabit]

I don't know if this is a desync error, but every now and again, the creature I placed down sometimes has the health not register and stay a 0/0.

Example:
Played against Incarnate-- I was going to win game, but the Elite Queen I placed in play ended up having a 0/0. I quinted it not knowing it would disappear as if it was not a Elite Queen with 7 health, but a creature with only 0 health. Thus, at end of turn, it disappeared.

(I had played it during animations still going from last move, I thought you couldn't do stuff while animations were still going...)

[(...)]

I've had something very similar today, i played a Firefly queen, i used the ability and the summoned firefly was 0\0.