I'm not sure if this is a bug or an intentional feature, but for what reason is capturing a pet not possible when I have an empty slot and numerous bronze and silver orbs to use? More often than not - actually rarely - do I ever get a chance to use an orb and attempt to capture a creature.
I've been trying different strategies, thinking perhaps it's a matter of having a pet in play that's at least as powerful as the pet being captured, or of the stronger class per the element wheel, or perhaps positioning of the pet is important, such as being on the front line, or next to the empty slot in the creature matrix (though order of creatures in that matrix is finicky at best).
But none of that has produced a fruitful result...
Is it a bug that capture attempts aren't always possible when you have spheres (other than the golden sphere)?
Or is there a reason?