Xamarin Forms WebView MacOS Not Saving Login Credentials on all Computers

Question

I have created a WebView based application for MacOS using Xamarin Forms. I have created a MacOS renderer like so:

    public class HybridWebViewRenderer : ViewRenderer<HybridWebView, WKWebView>, IWKScriptMessageHandler, IWKNavigationDelegate

I go to my own website that requires login.

When I run this on my dev computer it works fine and saves the login credentials.

Does anyone have any ideas why it would work for me, but not for an end user?