Possible Client Bug

Was playing a game just now in Dominion. The game froze similar to when you disconnect, but I was connected the entire time. Anything that I typed could be seen in /all, my character moved whenever I clicked on the map, attacked whenever I used an ability in game, but on my client side my character remained standing in spawn doing nothing.

I looked over at my gf's game and confirmed I was still in game and moving about, but my client acted as if I was not connected at all.