Show Hidden Elements

Overview

Elements hidden by the hide on device feature aren't gone forever; At any time, you can see all of the hidden elements on a page by pressing the 'show hidden elements' option (usually in the bottom-right corner of any page on which an element is hidden). 

Un-hiding an element

Once it's shown, you can un-hide hidden elements by pressing it; a pop-up will display prompting you to unhide the element.