Missing client id query parameter on custom error page

Sorry for so late response Carlos, I didn’t see a notification.

The exact steps to reproduce the issue:

  1. Navigate to hosted login page from the client site
  2. Login or signup. After that user is redirected to redirect_uri (back to the client site)
  3. press browser back button and try to login or signup
  4. An error occurs and a custom error page is showed with missing client_id query param

Error would be the following: Password login via OIDC-conformant clients with externally-hosted login pages is unsupported. Alternatively, login could have been initiated from the wrong place (e.g., a bookmark).

Any thoughts?
Thanks in advance