Azure Auth Problems with Wiki.js

[ShadowNexus686]

Hello,
I've been trying to set up Azure authentication for a week now and am running out of ideas.
I followed this documentation from wiki.js themselve:
https://docs.requarks.io/auth/azure

Here are a few details about the infrastructure:
We are using a NUTANIX virtualization environment, I have installed a Docker / Portainer on it. On this I have set up a Wiki.js container.
I have set up a certificate and im using Port 3443 (HTTPS)

Now some information about the Azure config in Wiki.js:

Azure is set up like this:

What I don't understand is why the configuration reference is as follows:
Allowed Web Origins: https://wikijs.huhn.local
Callback URL / Redirect URI: https://wikijs.huhn.local/login/5f15ffdf-1c7d-4921-af04-72315de4520d/callback
Login URL: https://wikijs.huhn.local/login
Logout URL: https://wikijs.huhn.local

(I am of course aware that these are only references, but the Azure callback URL points to the same?)

This is the error im getting:

I think Microsoft is trying to redirect to my Wiki but using "https://wikijs.huhn.local" for some reason instead of "https://wiki.heinrich-huhn.de:3443".

I cant explain, why this is happening.

Thanks in advance! :)