No, its perfectly logical. the Ai behaves like players would behave. Suck it up.
Both in this case and in targeting the squishy wizard and otherwise weak characters.
The downed character can be restored with the help of allies and healed, so its perfectly logical the enemies would try to finish you when you are down and much easier target because of it.
Also, it doesnt happen that often at all, in majority of cases my downed character gets hit once or twice more and only in very rare occasions the enemies go for the complete kill.
Mate, it would take 3 whole hits to kill a downed character, 3 whole hits who could have potentially killed an active one who were damaging your party. Even because its true that an incapacitated character can be healed, but in doing so your enemy is going to waste one entire turn to bring him up and another one to heal him. It's just more convenient to focus on active characters and fire a single shot to re-incapacitate one who was brought back (and who made his buddy waste a turn) instead of wasting 3 attacks to permanently kill him.
