How to restore visual editor in WordPress

Thanks @Milo

What is interesting is that the Super Admin can see the visual editor and gets this in the (chrome) console:

JQMIGRATE: Migrate is installed, version 1.4.1
wp-tinymce.php?c=1&ver=4603-20170530:25 Deprecated TinyMCE API call: <target>.onNodeChange.add(..)

But the normal Editor role user cannot see the visual editor and gets this in the (ie) console:

DOM7011: The code on this page disabled back and forward caching. For more information, see: http://go.microsoft.com/fwlink/?LinkID=291337
HTML1300: Navigation occurred.
DOM7011: The code on this page disabled back and forward caching. For more information, see: http://go.microsoft.com/fwlink/?LinkID=291337
JQMIGRATE: Migrate is installed, version 1.4.1

FYI, I did try to activate the TinyMCE plugin to see if I could get that WYSIWYG editor to work and it did not work so I ended up deactivating the plugin.