Here is the problem: Installed UWP controls (essential studio 13.3.0.7), referenced the Syncfusion controls for UWP XAML in my Unviersal App, toolbar with the controls is not there but I have added the items manually, everything builds and runs but on Page where controls are added nothing shows up. Strange. For example: this xaml runs and shows an empty page, what is wrong?
<Page xmlns:Input="using:Syncfusion.UI.Xaml.Controls.Input"
x:Class="App4.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App4"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Input:SfMaskedEdit Width="200" Height="50" />
</Grid>
</Page>