title: Web App Manifest: "start_url" doesn't work for Safari
body: <p>The <em>"start_url"</em> works for Android browsers, but for iPhone, Safari always uses current page's URL and ignores the <em>"start_url"</em>.</p>
  
  <p>For example, the current page is <em><a href="https://test.com/index.html" rel="noreferrer">https://test.com/index.html</a></em>, on manifest the <em>"start_url"</em> is set to be <em>"start_url": "index.html?flag=1"</em>, but when the page is added to home screen on Safari, it still uses <em><a href="https://test.com/index.html" rel="noreferrer">https://test.com/index.html</a></em>, without the parameter.</p>
  
  <p>Is there a way to apply a different URL as the start up URL for Safari?</p>