渐进式 Web 应用程序 - 不尊重屏幕方向

我的网络应用程序不遵循我的设置中的方向manifest.json:

{
  "manifest_version": 2,
  "version": "1",
  "name": "My App",
  "short_name": "My App",
  "icons": [
    {
      "src": "img/myapp/launcher-icon-0-75x.png",
      "sizes": "36x36",
      "type": "image/png"
    },
    {
      "src": "img/myapp/launcher-icon-1x.png",
      "sizes": "48x48",
      "type": "image/png"
    },
    {
      "src": "img/myapp/launcher-icon-1-5x.png",
      "sizes": "72x72",
      "type": "image/png"
    },
    {
      "src": "img/myapp/launcher-icon-2x.png",
      "sizes": "96x96",
      "type": "image/png"
    },
    {
      "src": "img/myapp/launcher-icon-3x.png",
      "sizes": "144x144",
      "type": "image/png"
    },
    {
      "src": "img/myapp/launcher-icon-4x.png",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "theme_color": "#43c1b1",
  "background_color": "#43c1b1",
  "start_url": "/myapp",
  "scope": "/myapp",
  "orientation": "landscape",
  "display": "standalone"

}

其他一切都正常 - 图标和背景颜色，那么为什么会出现强制横向的问题呢？

Chrome（移动设备）v 57.0.2987

Thanks

您原来的manifest.json是正确的，但它仅适用于Chrome Canary（版本59），但不适用于Chrome Stable（版本57）。

但我在发布日志中找不到任何提及它的内容。