WKWebView and temporary redirect

We have situation where our server issues a temporary redirect (302) to a different web site as part of authentication. This worked fine on iOS 11 and macOS 10.13, but 10.14 beta has broken it. It seems to reload the same page, instead of redirecting.


Is this a bug or feature? Anyone know if it is intended behavior?

WKWebView and temporary redirect
 
 
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