when breaking birch, spruce, acacia, jungle, or dark oak doors with an axe you will get a normal oak wooden door

when breaking birch, spruce, acacia, jungle, or dark oak doors with an axe you will gen a normal oak wooden door

What I expected to happen was...:
when i broke a birch door a birch door would drop

What actually happened was...:
a normal wooden door(oak) dropped

Steps to Reproduce:
1. Place any new door
2. Get an axe or not(im not your boss)
3. Break door