I was looking through the World of Warcraft questions, when I noticed a weird inconsistency with my page number.
As you can see, I'm on page 2, but page 1 is still highlighted. I have determined that this happens when I search under a tag, having replicated the issue with the Star Wars - The Old Republic tag. If I search for [world-of-warcraft] or [swtor], there is no problem. But I can replicate the problem by searching for [world-of-warcraft]+portal, or [swtor]+jedi.
I have confirmed that this occurs across multiple computers. I do not believe the mobile site has the same interface in question, as I can not manage to display page number options, under a tag search. I have also confirmed that the problem persists across page size; Provided there are still multiple pages, this error will occur if there are 15 or 50 questions on the one page.
I can still move between each page number, but other then page 1, the previous page will always remain marked. If I go to page 3, it will highlight page 2. If I go to page 4, it will highlight page 3. This includes going to the page by clicking the number, by clicking the "next" button and by manually entering a different page number in the URL.
If I am on the very last page, it will naturally highlight the index before it. So if I am on page 4 of 4, it will highlight 3. However, I have also noticed the next button still appears, where it normally does not if I am on the last page. Clicking on the button simply reloads the page, but the inconsistency remains.
This should not be a debilitating error, in any way or form. But I noticed it, and thought I would bring it up. Probably something as mundane as mishandled index numbers.