It's using DNS over HTTPS, and it doesn't default the URL templates correctly when mixing (some) providers. You can set them manually though, and it works.
This "URL template" thing seems odd – is Windows doing something like creating a URL out of the DNS IP and a pattern, e.g. 1.1.1.1 + "https://<ip>/foo" would yield https://1.1.1.1/foo?
If so, why not just allow providing an actual URL for each server?
It does allow you to provide a URL for each server. The issue is just that its default behavior doesn't work for all providers. I have another comment in this thread telling the original commenter how to configure it.
