PWA icons are not used in iOS 11.3 : <p>Now I'm testing PWA on iOS 11.3 and I use the manifest.json file below:</p>

<pre><code>{
  "name": "Maplat PWA Sample",
  "short_name": "Maplat PWA",
  "background_color": "#fc980c",
  "icons": [{
    "src": "/Maplat/pwa/icon-96.png",
    "sizes": "96x96",
    "type": "image/png"
  },{
    "src": "/Maplat/pwa/icon-144.png",
    "sizes": "144x144",
    "type": "image/png"
  },{
    "src": "/Maplat/pwa/icon-192.png",
    "sizes": "192x192",
    "type": "image/png"
  },{
    "src": "/Maplat/pwa/icon-256.png",
    "sizes": "256x256",
    "type": "image/png"
  }],
  "start_url": "/Maplat/debug.html?overlay=true",
  "display": "standalone"
}
</code></pre>

<p>This works well except icon setting.
In my iOS 11.3 on iPhoneX, icon files are not shown on home screen but screen capture is used as launcher button.</p>

<p>I compared my manifest with other sites, like <a href="https://www.ft.com/" rel="noreferrer">https://www.ft.com/</a> or <a href="https://r.nikkei.com/" rel="noreferrer">https://r.nikkei.com/</a>, but I couldn't find any differences in icon settings.
Icons of these sites work well with PWA on iOS 11.3.</p>

<p>What is wrong in my manifest.json?</p>

<p>P.S. My manifest.json works well with Android Chrome.</p>
