On the bottom of a post I see " There are 452 new topics remaining, or browse other topics in Bug Report"
Clicking on [xxx new] gets me a 404 error page instead of a list of new post in bug report forum. I suspect someone forgot to check the link or forgot to set up a new post page.
It happened to me, I actually contacted Technical Support and they fixed it for me. Apparently Its happening to a few other people. I tried getting into the New Players Forum and I had the same issue.
Also try to make sure you’re checking the new forums and not the old, that may happen on the older ones.
let me know if that works out for you 
They used href=“/new” which results in https://us.forums.blizzard.com/new (404), or https://us.forums.blizzard.com/en/wow/new (correct link). You can check if it works out because you can check to see if there’s any dev who can be arsed to change it. HTML is hard though.