Please read this FAQ: https://wpdiscuz.com/community/f-a-q/fixing-scroll-issue-after-comment-posting-sticky-header-menu/

I'd like to make a suggestion for a future version. After you comment or when clicking a link to a specific comment, WP Discuz must have JavaScript that smoothly scrolls you to the comment. 

If you don't have a sticky menu, it will scroll to the right spot.

If you have a sticky menu or something like it, it will scroll to where it thinks the right spot is, but the comment might be partially cut off by your sticky menu.

It's not a huge deal. Users are smart enough to know they need to then scroll back up a bit. But, it's a small cringy-type unwanted effect.

In a future version, there could be a setting that allows you to add or subtract from the default scroll-to point. So if you need the auto-scroll to scroll a little past the element it targets, you could put in 25px. If you need it to scroll less, -25px.