Not sure if this is a bug or just something amiss or awkward with screen placement:
I want to include both the Editor and Contributor, along with the default Administrator, as Allowed User Roles.But, cannot find a way to save the change. There is no visible “Save” button, and no way to scroll down if there is one below the current screen view.
Sorry to hear you are having this issue. Can you please share a screenshot of the settings menu so we can understand the current menu issue where there is no submit button. Also which browser did you use to test it? And for final, also clear your browser cache and give it a try again.