[iOS] Scaffold resizes when you come from an app with the keyboard open #43804
Description
This problem occurs whenever the keyboard is raised in other apps and return to the app
Steps to Reproduce
Open an app like messages and tap in a field, when the keyboard is on the screen, slide back to your app. The flutter app will resize weirdly for a moment.
Demo with gallery app
Target Platform: iOS
Target OS version/browser: 12/13
Devices: Simulator/iPhone X
[✓] Flutter (Channel master, v1.10.15-pre.205, on Mac OS X 10.15 19A602, locale es-ES)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 11.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 3.5)
[✓] Connected device (4 available)