App icon not showing on ios simulator

Expo Development Tools
1

I’ve made a simple change on a bare workflow project.

expo init

then changed app.json to:

{
  "name": "app",
  "displayName": "app",
  "expo": {
    "name": "app",
    "slug": "app",
    "version": "1.0.0",
    "assetBundlePatterns": [
      "**/*"
    ],
    "icon": "./assets/icon.png"
  },
  "ios": {
    "icon": "./assets/icon.png"
  }
}

but the default icon is still showing on the ios simulator.
Any ideas how to make the icon show?

Thanks