You can show or hide elements.
You can see all of the hidden widgets on a page by clicking the Unhide Elements () icon. In Classic Editor, the Unhide Elements icon is at the bottom of the left panel under SEO & Settings. In flex mode and Editor 2.0, the Unhide Elements icon is in the Layers panel next to the hidden element.
The Unhide Elements icon only displays if you have hidden elements in your site.
Note
When using the Unhide Elements feature, it only unhides or shows them on the device/screensize you are currently editing.