Clearing out cookies and cache hasn’t changed things.
But, I think I need to confirm that hide actually works as I thought it would. I expected that any result that was hidden would stay hidden, forever. Is this actually the case, the knowledge base article doesn’t make that clear.
The results that keep coming back are repeat visitors, is it the case that they become un-hidden on the occasion of their visiting again?
These are just a few that I can again see after they were hidden earlier.