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Relaunching debug iOS 14 app from home shows white screen in dark mode #66161

@jmagman

Description

@jmagman

I believe flutter/engine#20980 should be displaying a message with a label, but I only see a white screen.

I do see the log in console:

default	17:40:26.438662-0700	Flutter Gallery			Cannot create a FlutterEngine instance in debug mode without Flutter tooling or Xcode.

To launch in debug mode in iOS 14+, run flutter run from Flutter tools, run from an IDE with a Flutter IDE plugin or run the iOS project from Xcode.
Alternatively profile and release mode apps can be launched from the home screen.
[✓] Flutter (Channel master, 1.22.0-10.0.pre.263, on Mac OS X 10.15.5 19F101 x86_64, locale en-US)
    • Flutter version 1.22.0-10.0.pre.263 at /Users/magder/Projects/flutter
    • Framework revision 5c8580360a (2 hours ago), 2020-09-18 15:26:28 -0700
    • Engine revision 2abe69c608
    • Dart version 2.10.0 (build 2.10.0-136.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at /Users/m/Library/Android/sdk
    • Platform android-30, build-tools 29.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0)
    • Xcode at /Users/m/Applications/Xcode 12.app/Contents/Developer
    • Xcode 12.0, Build version 12A7209
    • CocoaPods version 1.9.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 49.0.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] VS Code (version 1.49.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.13.2

[✓] Connected device (6 available)
    • Jenn iPad Pro (mobile) • 00008027-001925360106802E                • ios            • iOS 14.0

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P0Critical issues such as a build break or regressioncustomer: productengineflutter/engine related. See also e: labels.platform-iosiOS applications specificallywaiting for PR to land (fixed)A fix is in flight

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