This is not wpForo design. I think you've done some customization or this is a theme conflict. The real wpForo design looks like this:

https://wpforo.com/community/qa-layout-how-to-and-troubleshooting/

Please rever back all customization. Make sure you don't have old wpForo template files in WordPress active theme directory.

Which CSS of the theme is affecting it? We could see all of the CSS code is coming via that plugin.
No theme CSS code is seen at all.

If it doesn't look like as the original design here then something affects/conflicts with wpForo style. This maybe a plugin CSS too. There is a .count class in your theme too. Put this css code in Dashboard > Forums > Settings > Styles > Custom CSS Code textarea to stop this conflict. Don't forget delete all caches and do Ctrl+F5 on forum front:

#wpforo #wpforo-wrap .count {
 float: none;
 font-size: 18px;
 padding: 2px 3px 0px 3px;
}