Version

18.0.1

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

At the start of the login flow, the endpoints from the well-known configuration overwrite the `authWellknownEndpoints` object.

Steps to reproduce the behavior

No response

A clear and concise description of what you expected to happen.

The sessionStorage endpoints should be a merge of the well-known and the `authWellknownEndpoints` configuration object.

Additional context

This could be caused by the changes merged with PR #1922.