We have a web app that is added to the home screen of an iPad for a more "App like" user experience. It was working perfectly until the most recent iPadOS update which has been causing problems with the UI. Now when the user navigates, a minimal version of the safari toolbar appears 
I've since attempted to fix this issue by adding a manifest.json with the display":"fullscreen", property
{
  "name": "1WSQ",
  "short_name": "1WSQ",
  "description": "1WSQ APP",
  "display": "fullscreen",
  "start_url": "/?homescreen=1",
  "background_color": "#000000",
  "theme_color": "#0f4a73",
  "icons": [
    {
      "src": "touch-icon-ipad-retina.png",
      "sizes": "256x256",
      "type": "image/png"
    }
  ]
}
Any other ideas on how this can be prevented would be much appreciated.