Issue 1:
Hi,

afraid I'm a flutter newbie. I was asked to report this bug.

I'll report back if I crack it.

Many thanks,

Andy.

Performing hot reload...
Syncing files to device Android SDK built for x86 64...
I/flutter (25832): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (25832): The following assertion was thrown building SlideTransition(animation: AnimationController#859ac(⏭
I/flutter (25832): 1.000; paused; for MaterialPageRoute<dynamic>(/))➩ProxyAnimation➩Cubic(0.40, 0.00, 0.20,
I/flutter (25832): 1.00)➩Tween<Offset>(Offset(0.0, 0.3) → Offset(0.0, 0.0))➩Offset(0.0, 0.0), state:
I/flutter (25832): _AnimatedState#7c1f8):
I/flutter (25832): 'package:flutter/src/widgets/framework.dart': Failed assertion: line 4659 pos 12: 'child == _child':
I/flutter (25832): is not true.
I/flutter (25832): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (25832): more information in this error message to help you determine and fix the underlying cause.
I/flutter (25832): In either case, please report this assertion by filing a bug on GitHub:
I/flutter (25832): https://github.com/flutter/flutter/issues/new
I/flutter (25832): When the exception was thrown, this was the stack:
I/flutter (25832): #2 SingleChildRenderObjectElement.forgetChild (package:flutter/src/widgets/framework.dart:4659:12)
I/flutter (25832): #3 Element._retakeInactiveElement (package:flutter/src/widgets/framework.dart:2880:14)
I/flutter (25832): #4 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2907:32)
I/flutter (25832): #5 Element.updateChild (package:flutter/src/widgets/framework.dart:2722:12)
I/flutter (25832): #6 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4666:14)
I/flutter (25832): #7 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2919:14)
I/flutter (25832): #8 Element.updateChild (package:flutter/src/widgets/framework.dart:2722:12)
I/flutter (25832): #9 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4666:14)
I/flutter (25832): #10 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2919:14)
I/flutter (25832): #11 Element.updateChild (package:flutter/src/widgets/framework.dart:2722:12)
I/flutter (25832): #12 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4666:14)
I/flutter (25832): #13 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2919:14)
I/flutter (25832): #14 Element.updateChild (package:flutter/src/widgets/framework.dart:2722:12)
I/flutter (25832): #15 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #16 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #17 StatefulElement.update (package:flutter/src/widgets/framework.dart:3811:5)
I/flutter (25832): #18 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #19 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #20 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #21 StatelessElement.update (package:flutter/src/widgets/framework.dart:3714:5)
I/flutter (25832): #22 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #23 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #24 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #25 StatefulElement.update (package:flutter/src/widgets/framework.dart:3811:5)
I/flutter (25832): #26 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #27 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4673:14)
I/flutter (25832): #28 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #29 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #30 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #31 ProxyElement.update (package:flutter/src/widgets/framework.dart:3921:5)
I/flutter (25832): #32 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #33 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4673:14)
I/flutter (25832): #34 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #35 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #36 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #37 StatefulElement.update (package:flutter/src/widgets/framework.dart:3811:5)
I/flutter (25832): #38 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #39 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #40 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #41 StatelessElement.update (package:flutter/src/widgets/framework.dart:3714:5)
I/flutter (25832): #42 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #43 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:4673:14)
I/flutter (25832): #44 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #45 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #46 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #47 ProxyElement.update (package:flutter/src/widgets/framework.dart:3921:5)
I/flutter (25832): #48 Element.updateChild (package:flutter/src/widgets/framework.dart:2711:15)
I/flutter (25832): #49 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3665:16)
I/flutter (25832): #50 Element.rebuild (package:flutter/src/widgets/framework.dart:3507:5)
I/flutter (25832): #51 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2255:33)
I/flutter (25832): #52 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:653:20)
I/flutter (25832): #53 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:208:5)
I/flutter (25832): #54 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
I/flutter (25832): #55 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
I/flutter (25832): #56 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:751:7)
I/flutter (25832): #58 _Timer._runTimers (dart:isolate/runtime/libtimer_impl.dart:382:19)
I/flutter (25832): #59 _Timer._handleMessage (dart:isolate/runtime/libtimer_impl.dart:416:5)
I/flutter (25832): #60 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
I/flutter (25832): (elided 3 frames from class _AssertionError and package dart:async)
I/flutter (25832): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter (25832): Another exception was thrown: 'package:flutter/src/rendering/box.dart': Failed assertion: line 1503 pos 18: 'debugDoingThisResize || debugDoingThisLayout ||
I/flutter (25832): Another exception was thrown: RenderBox was not laid out: RenderRepaintBoundary#431cb NEEDS-PAINT DETACHED
I/flutter (25832): Another exception was thrown: RenderBox was not laid out: RenderSemanticsAnnotations#f7a72 NEEDS-PAINT DETACHED
I/flutter (25832): Another exception was thrown: RenderBox was not laid out: RenderOffstage#5fdd2 NEEDS-PAINT
I/flutter (25832): Another exception was thrown: RenderBox was not laid out: RenderRepaintBoundary#431cb NEEDS-PAINT DETACHED
I/flutter (25832): Another exception was thrown: Duplicate GlobalKey detected in widget tree.
Reloaded 3 of 474 libraries in 433ms.

Issue 2:
The "Text Fields" option is hidden underneath the Android system buttons. I am on a Nexus 6P.

I can scroll up to see "Text Fields" but then the list animates back down. The last item I can see is "Tooltips".