Answered
How to make elements outside the canvas visible in Photoshop?
Once I drag an object off of my canvas it disappears in the grey document window. Is there a way to see items that fall outside of the canvas bounds? I don't understand why they removed this.

Before it used to be like this:

It's easily done in Illustrator: https://www.youtube.com/watch?v=-zRlc2KcW9w

