A pretty low potency weakness.
Low movement classes that aren't going to be jumping around the map much anyway like Guardians and Mystics won't really care this is there. Your evasion based rogues or seekers with movement bonuses are going to notice this, but usually just making a simple deck swap (throwing in a painkiller) is enough to get rid of this.
Given that most weaknesses on average make you lose two actions to resolve, this one is pretty weak and is almost trivial.