URL in address bar changed and also has PostMessage:
{
"payload": {
"payload": {
"id": "",
"path": "/login?shop=xx.myshopify.com"
},
"group": "Navigation",
"type": "APP::NAVIGATION::REDIRECT::APP",
"version": "2.0.5",
"clientInterface": {
"name": "@shopify/app-bridge-react",
"version": "2.0.5"
}
},
"source": {
"apiKey": "",
"host": "",
"shopOrigin": "",
"forceRedirect": true
},
"type": "dispatch"
}