To fire or not to fire?

[Lincoln Peters]

I've been working on a new game that includes tanks that can attack,
fire, and capture (but not capture directly).  While debugging, I
noticed that if the AI can shoot at something that it could capture, it
will fire at it until its target is destroyed or it runs out of ammo
(whichever comes first), and so it doesn't capture anything unless it
has to get right next to it!  Is this an AI bug?