This will happen to any adhesive eye stuck on plastisol. The adhesive reacts with the plastisol and gels. A fix is to first apply some of LC's color tech clear base, this acts as a barrier. Let it dry and then put the eye on. This will work better, but you really need to coat the eye with the clear paint after its stuck on so it will stay in place longer. Flat eyes which are thin and flexible will stay on better than 3D eyes.