title: overscroll-behavior property is not working on webview
body: <p>I have a fixed positioned modal with flex layout in my website wherein user can type content. I've included <code>overscroll-behaviour-y: none</code> to the modal to prevent the underlying page from scrolling and to suppress refresh on scroll of text-content. Though, it works well with chrome, it doesn't work with webview resulting in page refresh when user types a huge amount of data and tries to scroll up. I've tried including <code>overscroll-behaviour</code> property to all parent elements including the html and body as well but it has no effect. Is there something wrong with my approach?</p>
  
  <p>This is my sample modal css</p>
  
  <pre><code>position: fixed;
  z-index: 110;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  overscroll-behavior-y: none;
  z-index: 115;
  display: flex;
  overflow: hidden;
  flex-direction: column;
  justify-content: space-between;
  </code></pre>