If a user can’t view a sub-category and the latest topics are in the sub-category, the main category shows a blank space where the topics should appear.
Cat - user has perms
Subcat - user does not have perms
Subcat has 3 (or more) newer posts than the Cat does
Instead of showing the user blank, show the recent posts from the Cat
Likely to need some fancy coding to do, but might be possible I guess
EG: category A is visible B invisible … and cache is only built for anon, so a person who has visibility into sub category does not get to see the topics in categories view.
I think I can fix that for anons by adding 3 (or category_featured_topics setting) topics that anons can see to the end of the cache. If all others are filtered because of security, at least those will show.