Grails 3.2.4: custom authentication filter not called

Question

When upgrading from grails 2.5 to grails 3.x, the user password authentication filter does not start.

I am using spring-security core plugin 3.1.1

This is how a custom filter looks like

    class CustomAuthenticationFilter extends UsernamePasswordAuthenticationFilter {
  @Override
  protected String obtainUsername(HttpServletRequest request) {
    return (new CustomPrincipal(request.getParameter('company'), request.getParameter('username'))).toString()
  }
  @Override
  protected String obtainPassword(HttpServletRequest request) {
    return request.getParameter('password')
  }
   }

application.groovy

grails.plugin.springsecurity.filterChain.filterNames = [
    'securityContextPersistenceFilter',
    'logoutFilter',
    'customAuthenticationFilter',   
    'rememberMeAuthenticationFilter',
    'anonymousAuthenticationFilter',
    'exceptionTranslationFilter',
    'filterInvocationInterceptor'
]

resources.grrovy

customAuthenticationFilter(CustomAuthenticationFilter) {
    authenticationManager = ref('authenticationManager')
    sessionAuthenticationStrategy = ref('sessionAuthenticationStrategy')
    authenticationFailureHandler = ref('internalAuthenticationFailureHandler')
  }