Tooltip in TableRow gives render error

### Steps to reproduce

Using https://api.flutter.dev/flutter/widgets/Table-class.html I wanted to create a table with a sticky header with a tooltip. 
To simulate this I created two table widgets, one for the header and one for the content (which would be scrollable).
On the header I had to add a tooltip and while I was testing I found this strange behaviour.

### Expected results

Tooltip message shown with no error.

### Actual results

After pressing the tooltip the console displayed the following error: RangeError (length): Invalid value: Only valid value is 0: 1
The error occurs specifically in RenderTable.assembleSemanticsNode at line 687, suggesting this is related to Flutter's accessibility/semantics system not properly handling tooltips in single-row tables.

### Code sample

<details open><summary>Code sample</summary>

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

void main() {
  runApp(const TableExampleApp());
}

class TableExampleApp extends StatelessWidget {
  const TableExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Table Sample')),
        body: Column(children: [
          _TableHeader(),
          _TableBody(),
        ],),
      ),
    );
  }
}

class _TableHeader extends StatelessWidget {
  const _TableHeader({super.key});

  @override
  Widget build(BuildContext context) {
    return Table(
      border: TableBorder.all(),
      columnWidths: const <int, TableColumnWidth>{
        0: FlexColumnWidth(),
        1: FlexColumnWidth(),
        2: FlexColumnWidth(),
      },
      defaultVerticalAlignment: TableCellVerticalAlignment.middle,
      children: <TableRow>[
        TableRow(
          children: <Widget>[
            Row(children: [Text('Header 1', style: TextStyle(fontSize: 24)), Tooltip(message: 'Tooltip 1', child: Icon(Icons.info))]),
            Text('Header 2', style: TextStyle(fontSize: 24)),
            Text('Header 3', style: TextStyle(fontSize: 24)),
          ],
        ),
      ],
    );
  }
}

class _TableBody extends StatelessWidget {
  const _TableBody({super.key});

  @override
  Widget build(BuildContext context) {
    return Table(
      border: TableBorder.all(),
      columnWidths: const <int, TableColumnWidth>{
        0: FlexColumnWidth(),
        1: FlexColumnWidth(),
        2: FlexColumnWidth(),
      },
      defaultVerticalAlignment: TableCellVerticalAlignment.middle,
      children: <TableRow>[
        TableRow(
          children: <Widget>[
            Text('Body 1', style: TextStyle(fontSize: 24)),
            Text('Body 2', style: TextStyle(fontSize: 24)),
            Text('Body 3', style: TextStyle(fontSize: 24)),
          ],
        ),
                TableRow(
          children: <Widget>[
            Text('Body 1', style: TextStyle(fontSize: 24)),
            Text('Body 2', style: TextStyle(fontSize: 24)),
            Text('Body 3', style: TextStyle(fontSize: 24)),
          ],
        ),
      ],
    );
  }
}

```

</details>


### Screenshots or Video

<details open>
<summary>Screenshots / Video demonstration</summary>

<img width="1247" height="740" alt="Image" src="https://github.com/user-attachments/assets/84aaa70b-4015-4d99-a4b0-954e5ca2cfb7" />

</details>


### Logs

<details open><summary>Logs</summary>

```console
══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
The following RangeError was thrown during a scheduler callback:
RangeError (length): Invalid value: Only valid value is 0: 1

When the exception was thrown, this was the stack:
#0      List.[] (dart:core-patch/growable_array.dart)
#1      RenderTable.assembleSemanticsNode (package:flutter/src/rendering/table.dart:687:19)
#2      _RenderObjectSemantics._buildSemanticsSubtree (package:flutter/src/rendering/object.dart:5918:20)
#3      _RenderObjectSemantics.ensureSemanticsNode (package:flutter/src/rendering/object.dart:5847:7)
#4      PipelineOwner.flushSemantics (package:flutter/src/rendering/object.dart:1493:25)
#5      PipelineOwner.flushSemantics (package:flutter/src/rendering/object.dart:1501:15)
#6      RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:636:25)
#7      WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1261:13)
#8      RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:495:5)
#9      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1434:15)
#10     SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1347:9)
#11     SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1200:5)
#12     _invoke (dart:ui/hooks.dart:330:13)
#13     PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:444:5)
#14     _drawFrame (dart:ui/hooks.dart:302:31)
════════════════════════════════════════════════════════════════════════════════════════════════════
```

</details>


### Flutter Doctor output

<details open><summary>Doctor output</summary>

```console
[✓] Flutter (Channel stable, 3.35.5, on macOS 15.7.1 24G231 darwin-arm64, locale en-PT) [809ms]
    • Flutter version 3.35.5 on channel stable at /Applications/flutter/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision ac4e799d23 (3 weeks ago), 2025-09-26 12:05:09 -0700
    • Engine revision d3d45dcf25
    • Dart version 3.9.2
    • DevTools version 2.48.0
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-lldb-debugging

[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0) [3.7s]
    • Android SDK at /Users/user/Library/Android/sdk
    • Emulator version 36.1.9.0 (build_id 13823996) (CL:N/A)
    • Platform android-36, build-tools 36.1.0
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.7+-13880790-b1038.58)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 26.0.1) [2.3s]
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 17A400
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web [8ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2025.1) [8ms]
    • 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 21.0.7+-13880790-b1038.58)

[✓] Connected device (4 available) [7.0s]
    • iPhone 17 Pro (mobile)       • 65C94B6D-E5BB-46D4-A479-BDC0DE13D1D2 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-26-0 (simulator)
    • iPad mini (A17 Pro) (mobile) • AF44E666-99FE-45A6-9F09-406F1B9483CB • ios            • com.apple.CoreSimulator.SimRuntime.iOS-26-0 (simulator)
    • macOS (desktop)              • macos                                • darwin-arm64   • macOS 15.7.1 24G231 darwin-arm64
    • Chrome (web)                 • chrome                               • web-javascript • Google Chrome 141.0.7390.67

[✓] Network resources [430ms]
    • All expected network resources are available.

• No issues found!
```

</details>


Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Tooltip in TableRow gives render error #177038

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Video

Logs

Flutter Doctor output

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Uh oh!

Tooltip in TableRow gives render error #177038

Description

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Video

Logs

Flutter Doctor output

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions