The problem is to get the CSRF tokens working between Spring Security and Angular.
Spring Security CSRF Token Interceptor for Angular seems like something that should do
I am answering the question myself as there was a hidden one in the original GitHub repository: Issue #1.
The solution was to add a couple of lines of Java code that adds the CSRF parameters as Http message headers.
I added a working solution to the GitHub repo with Tag v.2.0.
v.2.0