Crash when modifying GlobalKey Widget index and parent in Column's Children

[yiiim]

Steps to Reproduce

1. Execute flutter run on the code sample
2. Click FloatingActionButton

Code sample

import 'package:flutter/material.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final GlobalKey _globalKey = GlobalKey();
  bool _updated = false;

  @override
  Widget build(BuildContext context) {
    late List<Widget> widgets;
    if (_updated) {
      widgets = [
        const Text("1"),
        const Text("3"),
        SizedBox(child: Text("2", key: _globalKey)),
      ];
    } else {
      widgets = [
        const Text("1"),
        Text("2", key: _globalKey),
        const Text("3"),
      ];
    }
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: widgets,
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            setState(() => _updated = true);
          },
          tooltip: 'Run',
          child: const Icon(Icons.play_arrow),
        ),
      ),
    );
  }
}

Logs

Restarted application in 275ms.

════════ Exception caught by widgets library ═══════════════════════════════════
The following assertion was thrown building _BodyBuilder:
'package:flutter/src/widgets/framework.dart': Failed assertion: line 6320 pos 12: '_children.contains(child)': is not true.

Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
  https://github.com/flutter/flutter/issues/new?template=2_bug.md

The relevant error-causing widget was
Scaffold
When the exception was thrown, this was the stack
#2      MultiChildRenderObjectElement.forgetChild
#3      Element._retakeInactiveElement
...     Normal element mounting (4 frames)
#7      Element.inflateWidget
#8      MultiChildRenderObjectElement.inflateWidget
#9      Element.updateChild
#10     RenderObjectElement.updateChildren
#11     MultiChildRenderObjectElement.update
#12     Element.updateChild
#13     SingleChildRenderObjectElement.update
#14     Element.updateChild
#15     ComponentElement.performRebuild
#16     Element.rebuild
#17     StatelessElement.update
#18     Element.updateChild
#19     ComponentElement.performRebuild
#20     Element.rebuild
#21     ProxyElement.update
#22     Element.updateChild
#23     ComponentElement.performRebuild
#24     Element.rebuild
#25     ProxyElement.update
#26     Element.updateChild
#27     RenderObjectElement.updateChildren
#28     MultiChildRenderObjectElement.update
#29     Element.updateChild
#30     ComponentElement.performRebuild
#31     StatefulElement.performRebuild
#32     Element.rebuild
#33     StatefulElement.update
#34     Element.updateChild
#35     ComponentElement.performRebuild
#36     Element.rebuild
#37     ProxyElement.update
#38     Element.updateChild
#39     ComponentElement.performRebuild
#40     StatefulElement.performRebuild
#41     Element.rebuild
#42     StatefulElement.update
#43     Element.updateChild
#44     SingleChildRenderObjectElement.update
#45     Element.updateChild
#46     ComponentElement.performRebuild
#47     Element.rebuild
#48     ProxyElement.update
#49     Element.updateChild
#50     SingleChildRenderObjectElement.update
#51     Element.updateChild
#52     ComponentElement.performRebuild
#53     StatefulElement.performRebuild
#54     Element.rebuild
#55     StatefulElement.update
#56     Element.updateChild
#57     ComponentElement.performRebuild
#58     StatefulElement.performRebuild
#59     Element.rebuild
#60     StatefulElement.update
#61     Element.updateChild
#62     ComponentElement.performRebuild
#63     Element.rebuild
#64     ProxyElement.update
#65     Element.updateChild
#66     ComponentElement.performRebuild
#67     Element.rebuild
#68     ProxyElement.update
#69     Element.updateChild
#70     ComponentElement.performRebuild
#71     StatefulElement.performRebuild
#72     Element.rebuild
#73     StatefulElement.update
#74     Element.updateChild
#75     ComponentElement.performRebuild
#76     Element.rebuild
#77     ProxyElement.update
#78     Element.updateChild
#79     ComponentElement.performRebuild
#80     StatefulElement.performRebuild
#81     Element.rebuild
#82     StatefulElement.update
#83     Element.updateChild
#84     SingleChildRenderObjectElement.update
#85     Element.updateChild
#86     ComponentElement.performRebuild
#87     Element.rebuild
#88     StatelessElement.update
#89     Element.updateChild
#90     SingleChildRenderObjectElement.update
#91     Element.updateChild
#92     SingleChildRenderObjectElement.update
#93     Element.updateChild
#94     ComponentElement.performRebuild
#95     StatefulElement.performRebuild
#96     Element.rebuild
#97     StatefulElement.update
#98     Element.updateChild
#99     RenderObjectElement.updateChildren
#100    MultiChildRenderObjectElement.update
#101    Element.updateChild
#102    ComponentElement.performRebuild
#103    StatefulElement.performRebuild
#104    Element.rebuild
#105    StatefulElement.update
#106    Element.updateChild
#107    SingleChildRenderObjectElement.update
#108    Element.updateChild
#109    ComponentElement.performRebuild
#110    StatefulElement.performRebuild
#111    Element.rebuild
#112    StatefulElement.update
#113    Element.updateChild
#114    SingleChildRenderObjectElement.update
#115    Element.updateChild
#116    ComponentElement.performRebuild
#117    StatefulElement.performRebuild
#118    Element.rebuild
#119    StatefulElement.update
#120    Element.updateChild
#121    SingleChildRenderObjectElement.update
#122    Element.updateChild
#123    ComponentElement.performRebuild
#124    StatefulElement.performRebuild
#125    Element.rebuild
#126    StatefulElement.update
#127    Element.updateChild
#128    ComponentElement.performRebuild
#129    Element.rebuild
#130    StatelessElement.update
#131    Element.updateChild
#132    ComponentElement.performRebuild
#133    StatefulElement.performRebuild
#134    Element.rebuild
#135    StatefulElement.update
#136    Element.updateChild
#137    SingleChildRenderObjectElement.update
#138    Element.updateChild
#139    SingleChildRenderObjectElement.update
#140    Element.updateChild
#141    ComponentElement.performRebuild
#142    Element.rebuild
#143    ProxyElement.update
#144    _InheritedNotifierElement.update
#145    Element.updateChild
#146    SingleChildRenderObjectElement.update
#147    Element.updateChild
#148    ComponentElement.performRebuild
#149    StatefulElement.performRebuild
#150    Element.rebuild
#151    StatefulElement.update
#152    Element.updateChild
#153    ComponentElement.performRebuild
#154    Element.rebuild
#155    ProxyElement.update
#156    Element.updateChild
#157    ComponentElement.performRebuild
#158    Element.rebuild
#159    ProxyElement.update
#160    Element.updateChild
#161    ComponentElement.performRebuild
#162    StatefulElement.performRebuild
#163    Element.rebuild
#164    StatefulElement.update
#165    Element.updateChild
#166    ComponentElement.performRebuild
#167    Element.rebuild
#168    StatelessElement.update
#169    Element.updateChild
#170    ComponentElement.performRebuild
#171    Element.rebuild
#172    StatelessElement.update
#173    Element.updateChild
#174    SingleChildRenderObjectElement.update
#175    Element.updateChild
#176    ComponentElement.performRebuild
#177    Element.rebuild
#178    ProxyElement.update
#179    Element.updateChild
#180    ComponentElement.performRebuild
#181    Element.rebuild
#182    ProxyElement.update
#183    Element.updateChild
#184    ComponentElement.performRebuild
#185    StatefulElement.performRebuild
#186    Element.rebuild
#187    StatefulElement.update
#188    Element.updateChild
#189    ComponentElement.performRebuild
#190    StatefulElement.performRebuild
#191    Element.rebuild
#192    StatefulElement.update
#193    Element.updateChild
#194    ComponentElement.performRebuild
#195    StatefulElement.performRebuild
#196    Element.rebuild
#197    BuildOwner.buildScope
#198    WidgetsBinding.drawFrame
#199    RendererBinding._handlePersistentFrameCallback
#200    SchedulerBinding._invokeFrameCallback
#201    SchedulerBinding.handleDrawFrame
#202    SchedulerBinding._handleDrawFrame
#206    _invoke (dart:ui/hooks.dart:151:10)
#207    PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:308:5)
#208    _drawFrame (dart:ui/hooks.dart:115:31)
(elided 5 frames from class _AssertionError and dart:async)
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
Each child must be laid out exactly once.
The relevant error-causing widget was
Scaffold
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by scheduler library ═════════════════════════════════
Updated layout information required for RenderErrorBox#1c7ba NEEDS-LAYOUT NEEDS-PAINT to calculate semantics.
'package:flutter/src/rendering/object.dart':
Failed assertion: line 2817 pos 12: '!_needsLayout'

════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by widgets library ═══════════════════════════════════
Duplicate GlobalKey detected in widget tree.
════════════════════════════════════════════════════════════════════════════════

[exaby73]

Triage report

I can reproduce this issue on Master (3.8.0-12.0.pre.68).

Code Sample (Same as OP)

import 'package:flutter/material.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final GlobalKey _globalKey = GlobalKey();
  bool _updated = false;

  @override
  Widget build(BuildContext context) {
    late List<Widget> widgets;
    if (_updated) {
      widgets = [
        const Text("1"),
        const Text("3"),
        SizedBox(child: Text("2", key: _globalKey)),
      ];
    } else {
      widgets = [
        const Text("1"),
        Text("2", key: _globalKey),
        const Text("3"),
      ];
    }
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: widgets,
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            setState(() => _updated = true);
          },
          tooltip: 'Run',
          child: const Icon(Icons.play_arrow),
        ),
      ),
    );
  }
}

Logs

#201    Element.rebuild
framework.dart:4672
#202    StatefulElement.update
framework.dart:5140
#203    Element.updateChild
framework.dart:3655
#204    ComponentElement.performRebuild
framework.dart:4977
#205    StatefulElement.performRebuild
framework.dart:5117
#206    Element.rebuild
framework.dart:4672
#207    StatefulElement.update
framework.dart:5140
#208    Element.updateChild
framework.dart:3655
#209    ComponentElement.performRebuild
framework.dart:4977
#210    StatefulElement.performRebuild
framework.dart:5117
#211    Element.rebuild
framework.dart:4672
#212    BuildOwner.buildScope
framework.dart:2749
#213    WidgetsBinding.drawFrame
binding.dart:866
#214    RendererBinding._handlePersistentFrameCallback
binding.dart:378
#215    SchedulerBinding._invokeFrameCallback
binding.dart:1286
#216    SchedulerBinding.handleDrawFrame
binding.dart:1216
#217    SchedulerBinding._handleDrawFrame
binding.dart:1074
#218    _invoke (dart:ui/hooks.dart:142:13)
#219    PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:338:5)
#220    _drawFrame (dart:ui/hooks.dart:112:31)
(elided 2 frames from class _AssertionError)
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by rendering library ═════════════════════════════════
Each child must be laid out exactly once.
The relevant error-causing widget was
Scaffold
main.dart:35
════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by scheduler library ═════════════════════════════════
Updated layout information required for RenderErrorBox#a9242 NEEDS-LAYOUT NEEDS-PAINT to calculate semantics.
'package:flutter/src/rendering/object.dart':
object.dart:1
Failed assertion: line 3242 pos 12: '!_needsLayout'

════════════════════════════════════════════════════════════════════════════════

════════ Exception caught by widgets library ═══════════════════════════════════
Duplicate GlobalKey detected in widget tree.
════════════════════════════════════════════════════════════════════════════════

[github-actions]

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