I will check the parsing error. I guess that in Noesis 1.2 that x:Key was ignored or just showing a warning and now we are raising an error. In fact we never supported SystemParameters static class, and x:Static support is very limited too.

Meanwhile you can just set it like:

Popup.PopupAnimation="None"

<Setter Property="PopupAnimation" Value="None"/>

Can't you use that?

Unfortunately, it doesn't work, it's still animated. I've tried to define default styles like that:

<Style TargetType="{x:Type Popup}">

<Setter Property="OverridesDefaultStyle" Value="True" />

<Setter Property="PopupAnimation" Value="None" />

</Style>

<Style TargetType="{x:Type ToolTip}">
    <Setter Property="OverridesDefaultStyle" Value="True" />
    <Setter Property="Popup.PopupAnimation" Value="None" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ToolTip}">
                <Border Background="Yellow">
                    <ContentPresenter />
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Unfortunately Popup elements cannot have default styles defined in the Theme as they don't override DefaultStyleKey property.
If you want something generic, you can define an implicit style for the Popup in the root of the UI tree.

Forget it... I just found out that our ToolTip code is setting the Popup animation to Fade always. So there is no way to change this behavior in the xaml right now.
I will investigate how to support this correctly, sorry for the inconveniences.

This issue is still not resolved.
I can't find a way to disable the popup animation...

Was this ever fixed? I'm not sure how to disable the fade animation for tooltips.

Since 3.0 version Popups tries to use the following animations in ApplicationResources if they exist:

• Anim.Popup.Fade
• Anim.Popup.Slide
• Anim.Popup.Scroll

Our NoesisTheme defines them like this:

  <Storyboard x:Key="Anim.Popup.Fade" Storyboard.TargetProperty="Opacity">

<DoubleAnimationUsingKeyFrames>

<EasingDoubleKeyFrame KeyTime="0" Value="0"/>

<EasingDoubleKeyFrame KeyTime="0:0:0.150" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

<Storyboard x:Key="Anim.Popup.Slide" Storyboard.TargetProperty="Opacity">

<DoubleAnimationUsingKeyFrames>

<EasingDoubleKeyFrame KeyTime="0" Value="0"/>

<EasingDoubleKeyFrame KeyTime="0:0:0.150" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

<Storyboard x:Key="Anim.Popup.Scroll" Storyboard.TargetProperty="Opacity">

<DoubleAnimationUsingKeyFrames>

<EasingDoubleKeyFrame KeyTime="0" Value="0"/>

<EasingDoubleKeyFrame KeyTime="0:0:0.150" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

Hi, I tried to disable tooltip animation with your suggestions, but it does not work. No matter if I put this storyboards inside my resources or override Popup.PopupAnimation inside style, nothing changes. Is there any other solution?

Fixed by supporting the definition of ToolTipPopupAnimation key as a resource:

<PopupAnimation x:Key="{x:Static SystemParameters.ToolTipPopupAnimationKey}">None</PopupAnimation>