Mecharachnid refusing to shoot

[Fengar]

I started the Annihilator class and got the Mecharachnid at level 10. Started fighting and noticed it was spending every turn either running or meleeing the enemy.

I set the leash lower and tried all the behavior options and all it ever does it melee, even when set to ranged behavior. It's holding 2 guns and has ammo, so it has nothing preventing it from shooting.