The reason it's scrolling up is because of how Wikia Fandom handles tabbers; it puts a #<TABNAME> on the end of the URL. This also happens to be how it handles Table of Contents headers, so it tries to take you to the first TOC entry that says "X-Factors."
This'll only happen on your sandbox; once you actually publish it it'll go away.
Since you haven't put up headers for the recent battles you have reserved I assume you don't know about this rule but you have to put one up on the appropriate page when you reserve a battle. It makes it easier for other editors to see who has reserved it.