FPortal semantic nodes persist in accessibility tree after visual close

[divan]

Describe the bug
When interacting with FDateField or other popover-based components, automated testing tools like Maestro Studio experience a severe coordinate shift where widgets appear squashed or incorrectly positioned (often in the top-left corner). While the app remains visually perfect on the device, the testing framework's "view" of the app becomes corrupted the moment a popover closes and, crucially, remains broken. This prevents any further interaction and testing.

Here is the minimal reproducible example app:

pubspec.yaml

name: forui_repro
environment:
  sdk: '>=3.0.0 <4.0.0'
dependencies:
  flutter:
    sdk: flutter
  forui: 0.18.1

main.dart

import 'package:flutter/material.dart';
import 'package:forui/forui.dart';

void main() => runApp(const App());

class App extends StatelessWidget {
  const App({super.key});
  @override
  Widget build(BuildContext context) => MaterialApp(
        home: FScaffold(
          child: Center(
            child: const SizedBox(
                width: 300, child: FDateField(label: Text('Inline Dates'))),
          ),
        ),
      );
}

To Reproduce
While issue is not limited to maestro, in order to visually "see" the bug, we need to use maestro studio (desktop app that will connect to Xcode/android simulators).

Steps to reproduce the behavior:

1. Install Maestro Studio
2. Launch iPad simulator (haven't tested on android, should be reproducible though)
3. Launch the app in simulator (flutter run -d )
4. Connect to simulator in Maestro studio, and click top-left button on the ipad screen streaming window to enable "Inspect mode" to observe bounding boxes

Here is example of Maestro Studio and simulator side-by-side before clicking a date field (not red bounding boxes around accessible widgets)

After clicking date field:

After clicking outside of the field (to dismiss popup):

At this point, if we use maestro tests, and click on the semantic label ("Inline Dates" in this code), the actual click will occur in a coordinate system depicted with red boxes - which doesn't match actual coordinates.

Expected behavior
Semantic nodes coordinates match actual coordinates.

Device (please complete the following information):
Flutter 3.41.1 • channel stable • ssh://git@github.com/flutter/flutter.git
Framework • revision 582a0e7c55 (6 days ago) • 2026-02-12 17:12:32 -0800
Engine • hash cc8e596aa65130a0678cc59613ed1c5125184db4 (revision 3452d735bd) (8 days ago) • 2026-02-09
22:03:17.000Z
Tools • Dart 3.11.0 • DevTools 2.54.1

• Forui version: 0.18.1
• Device: iPad simulator
• OS: iOS 26.2

Screen recording:

Screen.Recording.2026-02-18.at.17.58.08.mov

[Pante]

I've looked further into the issue and I believe it's a bug with Flutter itself. Haven't pinpoint the root cause but it seems that explicitly updating a CompositedTransformTarget's child prevents the issue from occurring.

MVE: https://gist.github.com/Pante/d7b2d1755802bafab022180d6a373063

Semantics visualization using Maestro Studio, same results can be observed using XCode's accessibility inspector:

Screen_Recording_2026-02-19_at_5.38.51_PM.mov

[divan]

Thanks for quick response. Is there any workaround at this moment? (I'm ok to use my fork of Flutter at this moment)

[divan]

I've found this Flutter commit to be a likely culprit: flutter/flutter@fccfa97

Test with pre and post commit versions of Flutter and can see that problem is gone with pre-commit version.

To test:

pre-commit version of flutter in a worktree

cd ~/src/flutter
git worktree add ~/src/flutter_pre_fcc "fccfa978a97633800aff123b776937d28262c04f^"
export PATH=~/src/flutter_pre_fcc/bin:$PATH
hash -r
flutter --version

post-commit version of flutter in a worktree

cd ~/src/flutter
git worktree add ~/src/flutter_pre_fcc "fccfa978a97633800aff123b776937d28262c04f"
export PATH=~/src/flutter_post_fcc/bin:$PATH
hash -r
flutter --version

forui's 0.18.1 sdk constraints should be changed to work with these:

diff --git a/pubspec.yaml b/pubspec.yaml
index 0d0b68d..1708b37 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -13,7 +13,7 @@ topics:
   - widget

 environment:
-  sdk: ">=3.11.0 <4.0.0"
+  sdk: ">=3.11.0-0 <4.0.0"
   flutter: ">=3.41.0"
 resolution: workspace
 workspace:

I'm testing it with a bit more complex MVE:

pre-commit version:

Screen.Recording.2026-02-19.at.12.14.37.mov

post-commit version

Screen.Recording.2026-02-19.at.12.16.41.mov