title: WebView inconsistently showing white screen react-native
body: <p>I'm using a WebView to show an iframe of a twitch-stream in my react-native app, however at some points when it renders the WebView only shows up as a blank white screen until you scroll/move the UI and at other times it works as intended.
  There are no errors emitted when the WebView is blank, it seems to load as intended so not really  sure why it just shows a blank white screen.</p>
  <p>Here is the WebView code:</p>
  <pre><code> &lt;Animated.View
     style={{
       height: anim,
       width: width,
       overflow: 'hidden',
     }}
   &gt;
     &lt;WebView
       onLoadEnd={() =&gt; {
         useAnimation()
       }}
       source={{
         uri: `https://host.com/iframe/?channel=${channelName}`,
       }}
       style={{
         height: heightByRatio,
         width: width,
         flex: 0,
       }}
       mediaPlaybackRequiresUserAction={false}
       allowsInlineMediaPlayback={true}
     /&gt;
  &lt;/Animated.View&gt;
  </code></pre>