My elise little spider becoming an enemy champion for me ???

Hey, I was playing last day and suddenly, I had elise in and when she transformed one of her spiders that dropped on my bench stayed there and didnt move, since that round it was on my bench like a champion ! I couldnt sell her when I tried. I could move her inside my bench. I tried to put her in my team as a champion, first that when I did it I couldnt reposition my champions, when I teleport to enemy ground it disappeared but after end when my lil legend backed to mmy ground spider was still there (she couldnt teleport with my team) but when I fight in my ground my team treated her like she is an enemy, they kill her in start and then move toward enemy. she was there all game until I died, wasting one of my spots pictures: https://ibb.co/MR4FqMj https://ibb.co/2SxCN8Z https://ibb.co/6Y7yX8C https://ibb.co/YNdXyYx https://ibb.co/1Qxmj9b https://ibb.co/BV7RbWp https://ibb.co/L6Xg6vn