React Native WebView scroll behaviour doesn't work as expected

I have a native app that uses React Native WebView to wrap a web page.

      <WebView
        ref={webview => (this.webview = webview)}
        source={{
          uri: `http://localhost:8000`
        }}
      />

In this example, the page is simply pointing to an instance of localhost that has the following code, which increments a number when the user scrolls:

var i = 0;
var $el = document.getElementById('counter')

window.addEventListener('scroll', function(e) {
  e.preventDefault();
  i += 1;
  $el.innerText = i
});

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body style="height: 2000px; background: linear-gradient(dodgerblue, yellowgreen)">
<div id="type"></div>
<div id="counter" style="position: fixed">0</div>
</body>
</html>

The scroll behaviour inside a React Native WebView behaves in a way that is different to the browser. It waits for the scroll to finish before firing a scroll event.

Here is a comparison of the behaviour; in the browser, the scroll event fires while the scroll is in progress, as wanted and as expected:

In a React Native project in iOS 11, the scroll event fires after the scroll has finished:

This behaviour is used presumably for performance reasons but it's all but killing the intended behaviour of my app.

Is there another work around I haven't thought of?

How can I ensure the scroll event behaves in the same way as the browser inside my React Native app?