I can confirm something funky is going on when you select the subcategory page in the list while already on that page. In our case it puts a link above the heading in the table:
Still occurring on the latest version, but not with every board. Simply go to page (example IP/c/announcements-discussions/announcements) and click on the board again. If you send me a PM, I can give you the IP if you want to take a look.