Searchbar ionInput stops firing after clicking cancel button

Ionic Framework ionic-v3
1 
  beta.11

  <ion-searchbar
    showCancelButton=true
    cancelButtonText="Cancel"
    placeholder="Search"
    debounce="750"
    [value]="defaultKeyword"
    (ionInput)="handleInput($event)">
  </ion-searchbar>

first search is fine, ionInput fires after a few types. Then I clicked the “cancel” button, typed again, ionInput fires no more. @mhartington