Ion refresher bug

Ionic Framework ionic-v3
1

Hi, i using this refresher but when i try testing him my application fixed.

I recording this => https://youtu.be/SXutFfRxnJQ
When i try scroll down after refresh ionic fixed and again try refresh.

Can you help me? What can i do to repair this :frowning:

My code:

  <ion-refresher slot="fixed" (ionRefresh)="products.refreshProducts($event)">
    <ion-refresher-content
    ></ion-refresher-content>
  </ion-refresher>