/clone item container disorientation

I was testing the /clone command, I found out that item containers that were facing west, north or east always automatically face south when you clone them using the /clone command

What I expected to happen was...:
That the container faced the way I originally placed it

What actually happened was...:
The container faced south instead of west.

Steps to Reproduce:
1. Place an item container facing west, north or east
2. Clone the container using the /clone command
3. The container will now face south

I hope I helped!