WizardSteps service doesn't work with NgRx effects

[miprib]

When injecting WizardSteps service to an NgRx effect a warning occurs that breaks further WizardSteps usage:

sebgroup-ng-wizard.js:424 No valid route config found for current route: "".
Make sure route guards provide a fallback if a access to a step is restricted and that inactive sub steps are handled too, using a wildcard route.

In our case, routes are configured correctly as described in the documentation. What is more, this doesn't happen when injecting WizardSteps to a regular Angular service.

Reproducing the issue

This issue can be reproduced in a sample seb-ng-wizard project (e.g. https://github.com/sebgroup/ng-wizard/tree/master/projects/seb-ng-wizard-lazy-demo):

1. Install NgRx store and effects
2. Create any effect and provide it in a module
3. Inject WizardSteps to the created effect
4. Launch the application and the before mentioned warning will appear.

Workaround

After playing around with it a little, we discovered that by extracting WizardSteps constructor code into a method and placing it in a timeout, the issue is resolved:

constructor(private router: Router, private _location: Location) {
  setTimeout(() => {
    this.init();
  }, 0);
}

Uppon further investigation we saw that the error occurs because of undefined access to routes (line 43). In essence, this._config.config['_loadedConfig'].routes[0].children can't find _loadedConfig initially but works just fine with setTimeout(...). Perhaps a race condition occurs somewhere?