I've included a capx of what I'm currently having a problem with right now.
Drag any of the flowers around with your mouse and click the green box. A snapshot is taken and it slides to the left.
While this works when fullscreen is off, it doesn't work properly when fullscreen is set to Scale. Why? If you move the flowers around and reclick, it doesn't update CanvasSnapshot.
Also, in the scale mode, the sprite size shrinks and overlays the previous snapshot. Not sure what's going on. Is there a way to clear CanvasSnapshot before retaking?