I tried to initialize my new FormControl using form state object and I noticed then this control doesn't influence my form validation and it also disappear from FormGroup values.

```
this.userForm = new FormGroup({
  email: new FormControl('', Validators.required),
  firstName: new FormControl('',Validators.required),
  lastName: new FormControl('',Validators.required),
  role: new FormControl({value: 'MyValues', disabled: true},Validators.required),
 })

```

Now if I try to do:

```
this.userForm.value //email, firstName, lastName

```

Have someone encountered this issue ? Any solution ?
Angular version: 5.2.6