Maybe I simply didn't get it, but I am a bit confused about the random behavior of umbraco in my multi-site configuration:

• I have configured two root nodes ("home" and "app")
• Both have different "Hostnames" configured: "home.mydomain.com" and "app.mydomain.com".
• I configured two CNAME entries in my DNS (one for each domain) to point to my Azure App Service hosting the umbraco application.

My expectation would be that I can use one domain name for one root node and the other domain name for the other root node.

Unfortunately, the first one wins:

• when I clear all cached and open "http://home.mydomain.com", I get the content of "home" in both "http://home.mydomain.com" and "http://app.mydomain.com"
• when clearing the cache and opening "http://app.mydomain.com", I get the content of "app" for both urls.

I hope it's just a little checkbox I currently don't find. I already tried adding "" to my umbracoSettings.config, but that setting has been removed. Also tried urlProviderMode="Absolute" without success.