Currently, through the Undo/Redo stack it is possible to cause a desync between an Element's Properties, and what's Rendered on-Stage.

At one point in the undo/redo stack, the Element will see itself 'disappear' from the Stage view until the Page is closed and re-opened.

See attached video.

Repro Steps:

1) Create a Studio Project featuring a MainPage.xaml
2) Import any Vector SVG into the Page's Root Grid.

3) Envelop the SVG's Canvas into a Viewbox, and clear the new Viewbox's Margins.

4) Select the Viewbox, navigate to its 'Render Transform' section, and set its Origin to 0.5, 0.5.

5) Navigate to the Animation/Storyboards Panel, and create a new Storyboard.

6) On Frame 0, change the Viewbox's Render Transform Rotation to '180'.

7) Press Ctrl+Z once to undo.

Observe how in the Properties Panel for the Viewbox, the Rotation input has not been undone, and still shows '180'.
Observe how however, on the Stage, the Element's rotation has been undone.

8)) Press Ctrl+Z twice more.

Observe how the Viewbox's adorner is no longer present in the centre of the Stage.

9) Save all open Documents, then close and re-open MainPage.xaml

Observe how now the Viewbox, and its included vector artwork, is in the middle of the Stage as expected.

Expected Results: Properties Panel values and what is displayed on-Stage match up.