Is there a desktop browser that doesn’t give out your ip?


I have noticed that since about a year, Firefox is yielding enough informations so that website you connect to know your ip, no matter the fact that you would be using a vpn.
I know there are some heuristics from google that are powerful and use deep learning. But one way or another, there must be a way to avoid ip detection.
The ONLY browser that works in correlation with a vpn is Duckduckgo browser on Android. Don’t be fooled by the tests of dns leak as they will just confirm that there is no dnsleak, the issue is that there is a direct host IP leak. You can check it on the website whatismyipaddress.com. I wish to know how to disable whichever feature is causing this trouble, or if there is another browser available which is trusted.