Assigning material orientation does not work

Hi there,

I am trying to assign a proper material orientation to my mesh, but it fails. I just created a really simple example following some YouTube tutorials.
What I do is: I create a simple surface and create a local coordinate system, then assign the material orientation by system ID. You can see what it does if I do so below. 

Is there any way around this? I am using Abaqus as a solver (don't know if thats relevant here). 

Thanks alot for any advice!