Yes, their behavior is what I personally do not like.
A damaged ship who starts to turn away becomes slower due to the fact she is not sailing in a straight line anymore, which means that sometimes she becomes an even easier target and focused enemy fire can coup the grace her in a few salvoes.
If she's a ship designed to have high speed it's even worse b/c she basically gives up the only advantage she has to dodge shots.
It would be much better to have several command choices for groups, like 'keep sailing ahead no matter what' or 'stay at least 8 Km from any enemy detected vessel' or 'start turning away if you get damaged below 50%'.
Controlling all of them as single ships is painfully long and boring right now.