My Sidebar Is Missing in the Editor
So your dashboard sidebar went missing, huh? A recent WordPress update has made the page editor default to Fullscreen Mode, which removes the dashboard sidebar. Chances are, you’re going to want it back if you need to navigate around the backend of your website.
With the steps below, you’ll be toggling Fullscreen Mode like a pro! Alternatively, you can use the Command + Option + Shift + F key combination shortcut.
1. Open the Editor Options
In the right hand corner of the page, you’ll find the editor options menu hidden behind a ⋮ button.
2. Toggle Fullscreen Mode
Toggle Fullscreen mode by clicking on the entry in the editor options menu.