Angular 4 reactive form is not clearing the validations after resetting the form

@AJT_82, we've modified a bit of your code dude.

<form [formGroup]="quickFileForm" (ngSubmit)="saveQuickFileForm(f)" #f="ngForm">

saveQuickFileForm(form) {
  console.log(this.quickFileForm);
  form.resetForm();
}

Eliminated @ViewChild, Seems to work also..BTW Thanks for the help! :)

This seems to be a known bug when having a button of type submit. There are some work-arounds presented in that issue, of which I would use the ngForm directive:

<form [formGroup]="quickFileForm" (ngSubmit)="saveQuickFileForm()" #f="ngForm">

TS:

@ViewChild('f') myForm;

saveQuickFileForm() {
  this.myForm.resetForm();
}

This seems to work fine! DEMO