In 8.3.1 release notes it says:

"Checkbox - resolved problem with checked state updates on ngModel value change,"

Is it related ?

In my case I have a form. The form is split between several sub-sections, each in a sub component.

One such sub-section holds the check box and the form is an input to it using:

  @Input() expense: FormGroup;

Setting the value of the cb is done in the sub-component

Everything but this works great

Dear @itay

I can't reproduce your problem, could you show me your TS code?

Below is my example, and everything looks fine:

<div class="container">
  <div class="row">
    <div class="col-md-12 mx-auto my-5">
      <form [formGroup]="reactiveForm">
        <mdb-checkbox formControlName="checked">Checked with FormControl</mdb-checkbox>
        <mdb-checkbox formControlName="unchecked">Unchecked with FormControl</mdb-checkbox>
      </form>
    </div>
  </div>
</div>

<button (click)="getCheckboxesValue()">click</button>

TS

  reactiveForm: FormGroup = new FormGroup({
    checked: new FormControl(true),
    unchecked: new FormControl(false),
  });

  getCheckboxesValue() {

    this.reactiveForm.patchValue({ checked: true });
  }
  ngOnInit() {
    this.reactiveForm.patchValue({ checked: false });
  }

I am waiting for your response. Best Regards, Bartosz.

<div class="col-md-4">
      <div class="md-form form-check">
        <mdb-checkbox formControlName="bVAT0" tabIndex="-1" (change)="updateVAT()" [readonly]="bForceEdit">Select</mdb-checkbox>
      </div>
    </div>

I tried to remove the [readonly], although bForceEdit is false and it didn't change. The check box remained unchecked after updating the value to true

It is worth mentioning that after setting the cb to true and clicking it it remains off. clicking again ticks it on so the value is false, just the tick is not shown