Problem with the backdrop
![tracciante](https://secure.gravatar.com/avatar/8973ba344e38d041eb9c441c5f4cf5df?&r=pg&s=100&d=https%3A%2F%2Fvanillicon.com%2F8973ba344e38d041eb9c441c5f4cf5df_100.png)
Hi,
from the Environment pane I loaded a new layered image as background, then I selected "adjust aspect ratio to backdrop" and "adjust dimensions to backdrop"; after that, everything disappeared in the viewport, and I can't find a way to restore a normal visualization.
Thank you for the hints.