"IDX10205: Issuer validation failed." on Azure Static Web App (Preview Environment)

[ThomasLeumann]

When visiting a Preview Environment, setup via github workflow from Pull Request, I receive this error on API endpoint.

{
    "code": 401,
    "message": "IDX10205: Issuer validation failed. Issuer: 'https://**********.centralus.5.azurestaticapps.net/.auth'. Did not match: validationParameters.ValidIssuer: 'https://***********.5.azurestaticapps.net/.auth' or validationParameters.ValidIssuers: 'null' or validationParameters.ConfigurationManager.CurrentConfiguration.Issuer: 'Null'. For more details, see https://aka.ms/IdentityModel/issuer-validation. "
}

I have configured api route with anonymous authentication, this is not occurring in Production with the same settings.