It appears that if a group feed includes a post from a sub-category, the category link itself will point to
/c/:sub-cat instead of the intended
/c/:parent-cat/:sub-cat. An example:
- Have a user in a group post in any sub-category
- Go on to group’s activity feed
- Click on category link for post
- See error page Oops! That page doesn’t exist or is private.
- Double check link, see it’s missing parent category from path