Issue with numericInput plus update function

[HenkWillcock]

Encountering an issue where you can't enter all the characters into a field without having to move the cursor around. With this example I can only enter the first 4 characters, then to enter the rest I have the move the cursor to the left.

Here's my input mask using ember's built in mut action which has the issue:

    <OneWayInputMask
      @id="taxNumber"
      @mask='999-999'
      class='docs-border docs-border-grey'
      @value={{this.taxNumber}}
      @update={{action (mut this.taxNumber)}}
      @options={{hash numericInput=true}}
    />

So as an example, the above InputMask only lets you input 1-234 before it gets stuck. This issue only happens with numericInput=true, if it's false, it seems to work OK.

Getting rid of @update and @value removes the issue, but of course now the value doesn't save when you submit the form.

    <OneWayInputMask
      @id="taxNumber"
      @mask='999-999'
      class='docs-border docs-border-grey'
      @options={{hash numericInput=true}}
    />

Any ideas what might be going on here?

Thanks.