With the following XAML created by the studio, I am not able to properly select words (double click) or even move the cursor char by char:

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

mc:Ignorable="d"

Background="#FF4D5052">

<Grid>

<TextBlock x:Name="Emoji" Text="hola colcacola" TextWrapping="Wrap" HorizontalAlignment="Center" VerticalAlignment="Center" RenderTransformOrigin="0.5,0.5" Height="103" FontSize="69" TextAlignment="Center" Foreground="#FF10BC0F"/>

</Grid>

</Page>