Yes sometimes it's a pain in the ass because you tell for instance a unit of legionaries to run around the side of an enemy unit so they are behind to the side and facing them (so you can charge into their rear) and they run right into them....wtf?

The "delay" you are all talking about is something they mentioned a long long time ago - the further your unit is from the general the longer it takes for the order to reach that unit, and that is what causes the delay. A "feature" rather than a bug and something that I think is actually pretty cool....