I have added the draft-writer group to the shared_drafts_allowed_groups:
Reason: Some members of the draft-writer group were unable to view a post in the drafts category that is a shared draft. They can see other things in the “draft” category that we created, but not necessarily something that is also a “shared draft” in the discourse sense. And indeed this is what I see at the top of a shared draft that has not been published: