Uncaught TypeError: Cannot read property 'radixPoint' of undefined

When I run

```
{{number-input class="form-control" unmaskedValue=vehicleService.cost group=true groupSize=3 separator="," decimal=false radix="."}}
```

I get the following error when I hit the backspace key:

```
Uncaught TypeError: Cannot read property 'radixPoint' of undefined
a.extend.numeric.canClearPosition @ jquery.inputmask.bundle.min.js:11o @ jquery.inputmask.bundle.min.js:8R @ jquery.inputmask.bundle.min.js:9S @ jquery.inputmask.bundle.min.js:9a.each.a.each.b.handler @ jquery.inputmask.bundle.min.js:8jQuery.event.dispatch @ jquery.js:4670jQuery.event.add.elemData.handle @ jquery.js:4338
```