Corrupt Graphics on Pixel XL and Xiaomi Mi 6 - xamarin.android

Question

I have a minimal sample project that produces corrupt graphics on a Google Pixel XL and a Xiaomi Mi6, but works correctly on a Samsung Galaxy S6.
Setting android:hardwareAccelerated=false fixes the corrupt graphics but leads to issues with animations and scrolling leaving trails.
The sample project uses MvvmCross, however I have been able to reproduce the behaviour without MvvmCross.
The project code can be found at https://github.com/stevedcc/Xamarin_Broken_Graphics.git
View:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/mainLogo"
android:src="#drawable/company_logo_1"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:adjustViewBounds="true" />
<ImageView
android:id="#+id/main_image"
android:layout_width="wrap_content"
android:layout_height="350dp"
android:layout_below="#drawable/main_image1"
android:adjustViewBounds="true"
android:src="?attr/main_image"/>
<TextView
android:id="#+id/mainScanText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/main_image"
android:gravity="center"
android:textSize="24sp"
android:text="Title" />
</RelativeLayout>
Styles:
<?xml version="1.0" encoding="utf-8" ?>
<resources>
<attr name="company_logo" format="reference" />
<attr name="main_image" format="reference"/>
<attr name="company_color" format="reference" />
<attr name="splash_background" fromat="reference" />
<color name="company_color_1">#7f7f7f</color>
<style name="CompanyTheme"
parent="#android:style/Theme.Material.NoActionBar">
<item name="company_logo">#drawable/company_logo_1</item>
<item name="main_image">#drawable/main_image1</item>
<item name="android:colorBackground">#000000</item>
<item name="company_color">#color/company_color_1</item>
</style>
</resources>
Expected Result as displayed by a Galaxy S6
Actual Result as displayed by a Pixel XL
Can anyone tell me how to fix the Corrupt graphics?

Answer 1

I found the answer myself:
<item name="android:colorBackground">#000000</item>
leads to the issue, if replaced by
<item name="android:colorBackground">#android:color/black</item>
then the project works.