If you use an animated door with the Door Behavior (the one that is for animated doors), when the door is opened, it has no collision, allowing the player to walk through it. Collision is restored when the door is closed again. If the door opens against a wall, this isn't much of an issue since the wall will provide collision. But if the open door is sticking outward, so a player can walk into it, it's an issue since they can walk right through it.
If you use an animated door with the Door Behavior (the one that is for animated doors), when the door is opened, it has no collision, allowing the player to walk through it. Collision is restored when the door is closed again. If the door opens against a wall, this isn't much of an issue since the wall will provide collision. But if the open door is sticking outward, so a player can walk into it, it's an issue since they can walk right through it.