This behavior is quite strange because quad9 has servers all over the world and is primarily based on switzerland and it is expected to show dns ip of swiss servers when using anon-dnswarden-swiss relay but it is showing germany. If that relay is hosted in germany then you should change the name of this relay so that people can better differentiate between swiss and non swiss dns. When i tried with different countries relay like sg,is,etc then quad9 showed those server ip only on ipleak.net


(Image for proof)