If I go to this example Drupal 8 tagged post, on the right sidebar, it shows
8 x 76 which seems to indicate there are 76 posts tagged with
8. However, if I then click on the "
8", I come to page with only 4 posts, "4 questions tagged".
But I know there are many more than that and it seems reasonable that 76 is a more accurate number as had showed in the sidebar on the previous single question page. I've noticed this with other tags as well. This behavior seems to have started a few days ago.