my creature was throwing fireballs over a wall at some troops, and a bit later I found some weird fire orb in the trees near where he was fighting :x (second japanese land)
Ahhh... the Christmas Lights Epic. Forgot about that one.
Just did some testing on a map of the First Japanese Land. Using the trainer I changed ny alignment to good and the trees closest to the town centre where the ground was blooming started to glow.
i've...SORTOF...had that happen to me before...but not with the creature.
when i was spamming dropping water balls on trees and pressing "m" quickly, one of the water balls would just float away 0_o and i would pick it up and try to drop it again but it'd disappear... lol but i don't think this is the same thing that you're experiencing....
your creature prolly through the fireball into the wall it rebounded back and it got stuck and couldnt move. So the rest of the fire couldnt burn out making it in orb in the middle of nowhere.. I had it happen to me. I actually though it was cool. 1. It was in the middle of my town and it looked like a awesome culturel thing. 2. ITS A GIANT BALL OF FIRE