Elevators locking people inside when something is wrong. I get customers forever calling during entrapments complaining about the elevators quality. Elevators are generally designed to keep you inside the elevator when something is wrong because it’s safer in there, than outside. If the elevator for instance fails to level properly and wants to take off while someone is crossing the door threshold it could be lethal, keeping you inside until a professional can retrieve you is much safer.
Elevators are BY FAR the safest mode of transportation in the world, but most people have no clue how they work so everyone gets freaked out.