AnimatedWrapPanel with adorned controls working very weird - displaced

Hello Actipro,

I want to use the AnimatedWrapPanel but found that when using adorned elements, these are displaced. I managed to reproduce it within your sample app.

Please find the code

\Actipro Software\WPF-Controls\v24.1.1\SampleBrowser\ProductSamples\ViewsSamples\QuickStart\Common\ProductListBoxItem.xaml

and modify in this way, replace the Border named 'border' with the following:

                <TextBox x:Name="ttt" Height="30" Width="50">
                    <TextBox.Text>
                        <Binding ElementName="ttt" Path="Text" NotifyOnSourceUpdated="True" NotifyOnTargetUpdated="True" NotifyOnValidationError="True">
                            <Binding.ValidationRules>
                                <validators:ValueIsNotNull ValidatesOnTargetUpdated="True"/>
                            </Binding.ValidationRules>
                        </Binding>
                    </TextBox.Text>
                    <TextBox.Style>
                        <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Static themes:SharedResourceKeys.TextBoxBaseStyleKey}}">
                            <Setter Property="Validation.ErrorTemplate">
                                <Setter.Value>
                                    <ControlTemplate>
                                        <Grid>
                                            <Border BorderBrush="Red" BorderThickness="1" HorizontalAlignment="Left">
                                                <AdornedElementPlaceholder Name="ErrorTextAdorner"/>
                                            </Border>
                                        </Grid>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </TextBox.Style>
                </TextBox>

and define also this:

    public class ValueIsNotNull : ValidationRule
    {
        public override ValidationResult Validate(object value, System.Globalization.CultureInfo cultureInfo)
        {
            return new ValidationResult(false, "Value must not be null");
        }
    }

This validator forces the adorner to be displayed.

Now, restore/maximize the window repeatedly and you will see that the red adorners are displaced. Please do not move the mouse when restoring/maximizing. Moving the mouse or clicking to another place forces the rendering of the adorners and they are placed in to correct places. In my case, I have a splitter between the wrappanel and another container, and it happens when moving the splitter.

This behavior is very disappointing. Please fix.