UBS will be updated to WordPress 5.1.1 on May 23rd, 2019. You’ll notice a handful of changes throughout your Dashboard but one that we want to share is the new Page/Post editor called Gutenberg.
It’s a big change from the current, “Classic” editor you’re familiar with so far. The Classic editor will continue to be available by default for all current and new sites.
Site Administrators are welcome to try out the new Gutenberg editor at any time!
Just log into your site Dashboard, click on Plugins in the left-hand menu, then deactivate the “Classic Editor” plugin.