BOOMEDIT: Double Use Lift Continuously Plays Lift Sound
Launch boomedit.wad and go to the lift that can be used twice up or down. When you use it, the lift sound will continue playing, even in single player. The intended behavior is for the lift sound to stop when the lift is not in motion.
This is not a bug, but a compatibility flag not enabled.
This can be fixed with co_zdoomsound set to 1.