Hey,
i have similar problem, the editor-style.css is loading fine and i can see it’s effect as i’m typing,
if: when i select “Load the CSS classes used in editor-style.css and replace the Formats button and sub-menu.”
then: the format menu is BLANK
expected to have the styles from “editor-style.css” there.
ANY HELP PLZ?
also looks like the plugin is preventing adding styles button via functions.php