The WordPress Editor as a More Tools & Options Setting.
You can read more about the different settings.
- More Tools & Options – Click the three vertical dots icon in the upper right corner to access the More Tools & Options Settings.
- Fullscreen Mode - Use this if you like to edit with no distractions. Click it to make the black WordPress sidebar always visible.
- Top Toolbar - Use this if you prefer having the block toolbar at the top of the screen, rather than on each block.