https://twitter.com/championswimmer/status/987327881960357889
My understanding is that FlutterView will handle the config change if AndroidManifest.xml contains:
android:configChanges="orientation|screenSize"
https://developer.android.com/guide/topics/resources/runtime-changes.html
But I'm not sure that we've written that down anywhere in our docs. I believe some of our sample are locked to portrait for historical reasons too?