Scrollbar does not fade out, on-scroll-complete event not triggered

Hi, I noticed that the scrollbar sometimes doesn’t fade out. This seems to happen randomly.

I tested this with the on-scroll-complete attribute on <ion-content> and it turns out, that the event is not triggered every time the scrolling is completed visually, meaning the scrolling is never complete and therefore __fadeScrollbars() is never executed.

Anyone else noticed this bug and found a fix?

Update: so there is already a bug ticket for this: https://github.com/driftyco/ionic/issues/3450