Well i am really disappointed . because i can verify that it is not supported - working
Did all the steps , and the final one was to go on the function App and disable Public Access from Access Restrictions , on the Networking Tab
If for any reason the DNS was resoving correctly without the need to add privatelink into the URL, then when asking the Original URL of the Function via the Query it should have worked. Once Public Access was shutdown it stopped
I hope this helps!
Kindly mark the answer as Accepted and Upvote in case it helped!