[keycloak-user] Gatekeeper failing to proxy for redirect or mobile! :(

I have Keycloak and Gatekeeper configured to use Google as an identity provider to front end my PHP application and most of the time it works great but sometimes it exposes my internal host (which Gatekeeper should be proxying for). If I login from my desktop(chrome) it works fine unless instead of clicking on a link my app tries to use a redirect header. i.e. my PHP example: header("Location: /protected/dashboard"); When that happens instead of redirecting to https://commentcontext.com/protected/dashboard, like it should, I see https://webapp/protected/dashboard in the URL field. This fails because there is no DNS for webapp. webapp is the name I use internally and it should never be exposed externally. Also, if I try to connect using my phone or tablet (both android) I get through the Google authentication fine but then it tries to send me to https://webapp/protected/dashboard, which again is a FAIL :( Why is Gatekeeper failing to proxy sessions when initiated via a redirect or when they come from mobile browser? Has anyone seen this behavior before? Any help anyone could provide on this issue would be greatly appreciated. Thanks, Nick