@mark-robustelli Sorry for the late response, I just saw this. I'm using 1.48.1 and yes, FusionAuth is the IdP. Thanks for the quick response!

Hi everyone, I have FusionAuth set up with a redirect URL for my application. When the page is actually redirected to that URL, FusionAuth appends its parameters (locale and userState) but a ? is not added before the parameters which causes the redirect URL to not work as expected. I found this GitHub issue with a similarly missing ? but it was due to a separate package (angular-oauth2-oidc) which I am not using.

I've attached an image with the redirect URL shown with the missing ? in the network log. I'm not sure where else to look for this being changed as it looks like it's coming directly from FusionAuth like that?