Hi,
I don't know if it open issue, but there is problem with placement of popup instead of right it show left.
<telerikPrimitives:RadPopup.Popup >
<telerikPrimitives:RadPopup x:Name="popupError"
IsModal="False"
OutsideBackgroundColor="#6F000000"
Placement='Right'>
<telerikMauiControls:RadBorder CornerRadius="8"
BackgroundColor="{DynamicResource PrimaryColor}">
<telerikMauiControls:RadScrollView HeightRequest="200">
<Grid Padding="20"
WidthRequest="200"
HeightRequest="170">
<Grid.RowDefinitions>
<RowDefinition Height="40" />
<RowDefinition Height="70" />
</Grid.RowDefinitions>
<Button Grid.Row="0"
Padding="2"
HorizontalOptions="End"
Text="X"
Clicked="OnClosePopup"
BackgroundColor="{DynamicResource PrimaryColor}" TextColor="White" />
<Label x:Name="labelError" Grid.Row="1" Text="" TextColor="White" HorizontalOptions="Center" VerticalOptions="Center"/>
</Grid>
</telerikMauiControls:RadScrollView>
</telerikMauiControls:RadBorder>
</telerikPrimitives:RadPopup>
</telerikPrimitives:RadPopup.Popup>