by joemichaels70
i've had this happen, too. with clear finishes, and also spraypaint, especially on the more 'rubber' type plastics.
typically i'll just put another coat of paint on it, and let it dry, then spray again, or
i'll try to 'quick cure' the finish by leaving it in front of a fan overnight, or
i'll try a different type of finish over the top, like a gloss or semi-
good luck!