I had on unit waiting a pending order during a battle. I ordered the hoplite to attack and they did not execute the order. The game just stuck in a kind of pending state. In the image below, we can see a "loading" icon over my hoplites, like the game is waiting and do nothing. That happened to me several time during the Victor Open Dev but I can't tell how to reproduce the bug. It seems to occur randomly. Actually, I have a workaround by saving the game and reloading it. The game is like the order has been properly executed and I can continue to play normaly.

(PS : French player, sorry for my extremely broken english)