Error building running uiscene_plugin_lifecycle_test_ios: '.../FlutterEngine.h' has been modified since the module file '....pcm' was built: size changed #192344

Steps to reproduce

Should be similar to #190449

But with a different repro steps:

1. You can try out by pulling my branch simplify_uiscene at repo hellohuanlin/flutter (which adds a new API to FlutterEngine.h

2. Run this command to run the test: ../../bin/cache/dart-sdk/bin/dart bin/test_runner.dart test --exit -t uiscene_plugin_lifecycle_test_ios --local-engine ios_debug_sim_unopt_arm64 --local-engine-host host_debug_unopt_arm64 --task-args destination=/Users/huanlin/Desktop/dontdeleteme

3. Observe all test fails with the above error message

Expected results

No failure

Actual results

[2026-09-04 18:08:38.359470] [STDOUT] stdout: :0: error: file '/Users/huanlin/Library/Developer/Xcode/DerivedData/NativeUIKitSwiftExperiment-aeopvrhuycbudiffrnvlrmndwref/Build/Products/Debug-iphonesimulator/Flutter.framework/Headers/FlutterSceneDelegate.h' has been modified since the module file '/Users/huanlin/Library/Developer/Xcode/DerivedData/NativeUIKitSwiftExperiment-aeopvrhuycbudiffrnvlrmndwref/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules/FlutterPluginRegistrant-6YZHT9OUIVA914RQ4Z2MDB3GZ.pcm' was built: size changed (was 889, now 893)

Code sample

NA

Screenshots or Video

NA

Logs

NA

Flutter Doctor output

huanlin@huanlin-mac devicelab % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[!] Flutter (Channel [user-branch], 3.47.0-1.0.pre-1032, on macOS 26.6.2 25G83 darwin-arm64, locale en)
! Flutter version 3.47.0-1.0.pre-1032 on channel [user-branch] at /Users/huanlin/Desktop/flutter/flutter
Currently on an unknown channel. Run flutter channel to switch to an official channel.
If that doesn't fix the issue, try deleting the 'bin/cache/flutter.version.json' file in your Flutter SDK directory and then reinstall
Flutter by following instructions at https://flutter.dev/setup.
! Upstream repository [email protected]:hellohuanlin/flutter.git is not a standard remote.
Set environment variable "FLUTTER_GIT_URL" to [email protected]:hellohuanlin/flutter.git to dismiss this error.
[!] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
✗ Flutter requires Android SDK 36 and the Android BuildTools 28.0.3
To update the Android SDK visit https://flutter.dev/to/macos-android-setup for detailed instructions.
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
[✓] Xcode - develop for iOS and macOS (Xcode 26.4)
[✓] Chrome - develop for the web
[✓] Connected device (6 available)
! Error: Browsing on the local area network for Huan’s iPhone 15 Pro. Ensure the device is unlocked and attached with a cable or
associated with the same local area network as this Mac.
The device must be opted into Developer Mode to connect wirelessly. (code -27)
! Error: Browsing on the local area network for Huan’s iPad 10 Landscape. Ensure the device is unlocked and attached with a cable or
associated with the same local area network as this Mac.
The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources

! Doctor found issues in 2 categories.
huanlin@huanlin-mac devicelab %