The following xaml freezes NoesisGUI during layout loop because of continuous changes to the over element:

<Grid

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

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

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions">

<Button Background="Red" BorderThickness="0" HorizontalAlignment="Center" VerticalAlignment="Center" Padding="0">

<Border>

<TextBlock x:Name="ShortcutName" Background="Black" Text="Ctrl+Z" Visibility="Visible" />

</Border>

<i:Interaction.Triggers>

<i:EventTrigger EventName="MouseEnter">

<ei:ChangePropertyAction PropertyName="Visibility" TargetName="ShortcutName" Value="Collapsed" />

</i:EventTrigger>

<i:EventTrigger EventName="MouseLeave">

<ei:ChangePropertyAction PropertyName="Visibility" TargetName="ShortcutName" Value="Visible" />

</i:EventTrigger>

</i:Interaction.Triggers>

</Button>

</Grid>