On Chrome and Firefox, pagination is a bit messed up. I hit the arrow to advance to next forum page, but the same page loads. Clicking on the page numbers also leads to wrong pages loading. I believe it's easier to explain the issue by going to a higher page number. I'll start on page 60 and tell you the results.
Start at: https://www.speedrun.com/the_site/forum/60 On this page, the number "59" is highlighted, showing the 59th forum page. I click on "60" and the same page is loaded. I click on the ">" paginator and the same page is loaded. I click on the "<" paginator and https://www.speedrun.com/the_site/forum/58 is loaded, with number "57" highlighted.
I believe the issue here is that you are loading the correct forum page -1 each time. ">" adds one, but you subtract one. "<" subtracts one, and you subtract one. Clicking on any page number gives you that page, but you subtract one.
Cheers!
Edit November 2021: Thanks for fixing the issue!
