Spell check not working in the Editor

Hello! Hoping someone may be able to tell me how to get the spell check working in the editor, please? Strangely it works in composition mode, but not in the main editor so not sure how to fix this. For info, I have ‘check spelling while typing’ and ‘check grammar with spelling’ both turned on. Thanks again!

I’m having the same problem.
Mac OSX: 10.13.4
Scrivener updated to latest edition.
Problem does not occur on iOS.

Yup, same - just doesn’t work.