enabling SegmentedControl in XAML Previewer

[stepheneb]

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Testing 4.1.1-beta1 in XAML Previewer in Visual Studio on iOS project and am getting this error:

Looking for how to actually get the text of that error -- not possible to select and copy in that display.

I'll make a separate repo with just the code for testing the segmented button if that is helpful.

Am developing a cross-platform app on MacOS and Windows. Will test on Windows next.

Will put more details from Visual Studio in comments.

This is what the control looks like running on the iOS emulator:

This is what it looks like in the XAML Previewer:

Code running on Android emulator:

[stepheneb]

Visual Studio MacOS details:

Visual Studio Community 2019 for Mac
Version 8.1.5 (build 9)
Installation UUID: 2c4085a8-b67f-4467-9e4b-af2eea36766b
	GTK+ 2.24.23 (Raleigh theme)
	Xamarin.Mac 5.6.0.25 (d16-0 / 50f75273)

	Package version: 518010028

Mono Framework MDK
Runtime:
	Mono 5.18.1.28 (2018-08/223ea7ef92e) (64-bit)
	Package version: 518010028

NuGet
Version: 5.0.2.5988

.NET Core
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
	2.1.11
	2.1.9
	2.1.2
SDK: /usr/local/share/dotnet/sdk/2.1.700/Sdks
SDK Versions:
	2.1.700
	2.1.505
	2.1.302
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.18.1/lib/mono/msbuild/Current/bin/Sdks

Xamarin.Profiler
Version: 1.6.10
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

Updater
Version: 11

Apple Developer Tools
Xcode 10.2.1 (14490.122)
Build 10E1001

Xamarin.Mac
Version: 5.10.0.157 (Visual Studio Community)
Hash: 6bd94753
Branch: d16-1
Build date: 2019-06-12 17:28:48-0400

Xamarin.iOS
Version: 12.10.0.157 (Visual Studio Community)
Hash: 6bd94753
Branch: d16-1
Build date: 2019-06-12 17:28:47-0400

Xamarin Designer
Version: 16.1.0.467
Hash: f1657e133
Branch: remotes/origin/d16-1-new-document-model
Build date: 2019-06-18 21:57:42 UTC

Xamarin.Android
Version: 9.3.0.23 (Visual Studio Community)
Commit: HEAD/d0b48056f
Android SDK: /Users/stephen/Library/Android/sdk
	Supported Android versions:
		5.0 (API level 21)
		5.1 (API level 22)
		6.0 (API level 23)
		7.0 (API level 24)
		7.1 (API level 25)
		8.0 (API level 26)
		8.1 (API level 27)

SDK Tools Version: 26.1.1
SDK Platform Tools Version: 29.0.1
SDK Build Tools Version: 28.0.3

Build Information: 
Mono: mono/mono/2018-08@3a07bd426d3
Java.Interop: xamarin/java.interop/d16-1@5ddc3e3
LibZipSharp: grendello/LibZipSharp/d16-1@44de300
LibZip: nih-at/libzip/rel-1-5-1@b95cf3f
ProGuard: xamarin/proguard/master@905836d
SQLite: xamarin/sqlite/3.27.1@8212a2d
Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-1@acabd26

Microsoft Mobile OpenJDK
Java SDK: /Users/stephen/Library/Developer/Xamarin/jdk/microsoft_dist_openjdk_1.8.0.25
1.8.0-25
Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Android Device Manager
Version: 1.2.0.44
Hash: aac645b
Branch: remotes/origin/d16-1
Build date: 2019-05-29 19:55:24 UTC

Xamarin Inspector
Version: 1.4.3
Hash: db27525
Branch: 1.4-release
Build date: Mon, 09 Jul 2018 21:20:18 GMT
Client compatibility: 1

Build Information
Release ID: 801050009
Git revision: bd0ab28ba941b19b39322247db020dcd0fb305d0
Build date: 2019-07-03 17:15:21+00
Build branch: release-8.1
Xamarin extensions: 8cc25b5cb090e6c23b62a7901000c299977eb08d

Operating System
Mac OS X 10.14.5
Darwin 18.6.0 Darwin Kernel Version 18.6.0
    Thu Apr 25 23:16:27 PDT 2019
    root:xnu-4903.261.4~2/RELEASE_X86_64 x86_64

Enabled user installed extensions
AddinMaker 1.6.0
Cake Task Runner 0.1
Grunt Task Runner 0.1
Gulp Task Runner 0.1
MSBuild Editor 2.3.1
NPM Task Runner 1.4
Task Runner Explorer 0.1.2
Task Runners Bundle 0.1
TypeScript Task Runner 0.1