Hello Elias79,
So to clarify these are the steps you are using to enable Ray Traced Distance Field?
1.) Go to your project settings > Render > Enable Mesh Distance Fields
2.) Restart your project after saving.
3.) Go to your directional light and enable ray Traced Distance Field Shadows
Following these steps I was able to create the image above.
Let me know if you are doing any additional steps,
Thanks,