After a successful full sandbox migration, I am unable to add any article editing actions to the article page layouts. I have nearly everything toggled on in the permission set, yet I cannot edit articles while viewing them despite having added the actions in the page layout configuration. At most I have managed to get Edit as Draft to appear in the list view, but not in the page layout view.

I do see one odd thing, when viewing the object settings in my permission set, there are two Knowledge objects, one with all the expected R/W toggles and one with only the tab settings group. I don't know if this is a Lightning bug or a migration issue. Anyone else have these problems?