It appears to be installed. At least it is listed in the Actions list on the right in the Basic section. But clicking on it in the action list just displays a circling circle on the right. A tap and hold to edit allows me to change the icon color etc and add to the action bar. But it does not appear in the action bar.
Maybe I have a messed up my Drafts install. I am happy to delete it and any Drafts notes, and reinstall.