First picture is default targeting of Flame Dart. As you can see it tries to attack Aithir with DefUp and then wake up a sleeping monster. Also I have low Agility so I am likely to miss that Aithir.
Optimal targeting is shown on second picture: hitting Aithir with OffUp, then Aithir with DefUp and then Chaos (charmed Fotia is immune to Flame Dart).
Not sure if it's easy/worthwhile to fix but I reported it anyway