Currently, if an Element has a Behavior attached to it, and the Element is deleted from the Navigator, both the Element and the Behavior will cease to display, expected.

However, when the Deletion action is 'undone' via Ctrl+Z, the Element successfully returns, its Behavior successfully returns, but the Behavior's effect doesn't Render on-Stage until the Page is closed and re-opened.

See attached video.

Repro Steps:

1) Download, unzip, and open the attached 'UndoBackgroundEffect' Noesis Project in Studio.

2) Open MainPage.xaml, and navigate to the Behaviors tab of the Interactivity Panel.
Observe the BlurEffect on the inverted triangle on the Stage.

3) In the Navigator, select the 'Badge_Blurrer' Element that the Behavior is attached to, and delete it.
Observe how the Element, and its attached Behavior have been removed, and that its BlurEffect no longer renders on-Stage, as expected.

4) Press Ctrl+Z to 'undo' the deletion of the Element and its Behavior.
Observe how the Element has returned to the Stage/Navigator, its Behavior has returned to the Behaviors tab, but the BlurEffect itself is no longer rendering on-Stage.

5) Close and re-open MainPage.xaml.
Observe how the BlurEffect is now displaying on-Stage once again.

Expected Results: Undoing the deletion of an Element containing a Behavior immediately renders the Behavior's Effect back on-Stage.