Flutter Web - Blank Screen on IOS 12.5.7

Steps to reproduce

run flutter create my-project
navigate to the project, and on a macbook with an attached iOS device (needs to be physical device), run flutter run -d web-server --web-port {port} --web-hostname {my.ip.address} 3: on the connected iOS device, open up http://(my.ip.address}:{port}

Expected results

You should see the standard Flutter counter app that you see when running on macos browsers

Actual results

iOS Safari just shows a blank screen. If you have Safari developer tools open for your connected device, you can see some vague errors in the console:

Screenshot 2024-04-26 at 2 01 47 PM

Code sample

View minimal repro sample [here](https://github.com/stefanhk31/repro_ios_web)

Screenshots or Video

Screenshots / Video demonstration

[Upload media here]

Logs

```console [Paste your logs here] ```

Flutter Doctor output

Doctor output

```console [✓] Flutter (Channel stable, 3.19.6, on macOS 14.4.1 23E224 darwin-arm64, locale en-US) • Flutter version 3.19.6 on channel stable at /Users/stefanhk/development/flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision 54e66469a9 (9 days ago), 2024-04-17 13:08:03 -0700 • Engine revision c4cd48e186 • Dart version 3.3.4 • DevTools version 2.31.1 [✓] Android toolchain - develop for Android devices (Android SDK version 33.0.2) • Android SDK at /Users/stefanhk/Library/Android/sdk • Platform android-34, build-tools 33.0.2 • ANDROID_HOME = /Users/stefanhk/Library/Android/sdk • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231) • All Android licenses accepted. [✓] Xcode - develop for iOS and macOS (Xcode 15.3) • Xcode at /Applications/Xcode.app/Contents/Developer • Build 15E204a • CocoaPods version 1.15.2 [✓] Chrome - develop for the web • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome [✓] Android Studio (version 2022.3) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231) [✓] VS Code (version 1.88.1) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.86.0 [✓] Connected device (3 available) • Stefan’s iPhone 6 (mobile) • c59963ee3c2814c2f0a0a21ba0149ad8df679d32 • ios • iOS 12.5.7 16H81 • macOS (desktop) • macos • darwin-arm64 • macOS 14.4.1 23E224 darwin-arm64 • Chrome (web) • chrome • web-javascript • Google Chrome 124.0.6367.93 [✓] Network resources • All expected network resources are available.

flutter / flutter