It's very obvious if you use something like origins to change your height but, stand against a wall, close the door against yourself. For the taller doors you can see it if you're tall looking down, but if you're short and close the door it will allow you to see through the world.
It seems it's the bottom 1 block of DramaticDoors only.

Important Information
Minecraft Version: [1.20.1]
Mod Loader System: [Fabric]
DramaticDoors Version: [3.3.1]

Imgur Video:
https://imgur.com/3eNn2N7