Currently ForwardedHeaderTransformer assumes the url is url encoded which is not necessarily the case.
I experienced an issue where the a query parameter as part of the OpenID Connect flow contains a "=" character which fails the verifyUriComponent check in HierarchicalUriComponents.
Comment From: pivotal-cla
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Comment From: rstoyanchev
I've solved this in a slightly different way, essentially still avoiding encoding but also not causing a strict check to be performed.