There is a UI glitch on the distgit instance on packages that are orphaned and have a field called "Orphaned for:". The current UI pushes the text in that field out into the main part of the page outside of the sidebar (overrunning the divider line), and that then leads to the tab selection indicator extending out into the main part.

This can be seen on the nightview package for instance: https://src.fedoraproject.org/rpms/nightview (captured in the attached screenshot).