I have fairly simple helloworld app, the problem boils down to two lines of code:
<Slider minValue="1" maxValue="999" [(ngModel)]="intertialResolution"></Slider>
<Label [text]="intertialResolution" textWrap="false"></Label>
intertialResolution is an ordinary field with initial value equal to 10. I've found that the problem shows up in all cases when I try to bind the value which is ngModel'ed. If one of the above lines is removed the app works perfectly fine. Also I've successfully imported NativeScriptFormsModule into my NgModule.