Ion-input not working without connection

Hi!

I have a form that when a try to input something it doesnt work without connection, I dont know why

<form [ngFormModel]="form" (ngSubmit)="onSubmit(form.value)">
          <ion-grid>
              <div *ngIf="note">
                <ion-row padding-left>
                  <label id="label-note-{{bloco.id_division}}"><strong>Observação:</strong></label>
                </ion-row>
                <ion-row padding-left>
                  <ion-input type="text" id="note-txt-{{bloco.id_division}}"
                  [ngFormControl]="form.controls['note']" value="{{note}}"></ion-input>
                </ion-row>
              </div>
              <ion-row>
                <img [src]="base64Image" *ngIf="base64Image" />
              </ion-row>
              <ion-row>
                <button block dark outline (click)="analyze(unidade.id_unit)" *ngIf="base64Image">
                 Analisar
               </button>
              </ion-row>
              <ion-row>
                <ion-col width-70>
                  <ion-input class="gray" value="{{value}}" id="value-{{bloco.id_division}}"
                  type="number" [ngFormControl]="form.controls['value']" placeholder="valor da leitura"  ng-pattern="/^[0-9]+(\.[0-9]{1,2})?$/" step="0.01">
                  </ion-input>
                </ion-col>
                <ion-col width-20>
                    <button [disabled]="!form.valid || status_portal" type="submit" class="btn-submit">
                        <ion-icon class="green-icon" name="arrow-dropright-circle"></ion-icon>
                    </button>
                </ion-col>
              </ion-row>
          </ion-grid>
        </form>