I may have missed the announcement for it, but very happy to see ghosts partially implemented for vocab 
Out of curiosity, is there a timeline for when it will be fully functional? At the moment, they’re showing up in my grammar queue, which confused me at first because I thought they hadn’t been properly added.
(Side note for anyone who is also looking for this feature: at the moment you need to manually add ghosts from specific vocab sentences. Doesn’t look like they are being automatically added yet when you get a question wrong.)