Board Thread:General Discussion/@comment-29342734-20161201021957/@comment-18172179-20161201023911

It's actually a default function of the template. Every last issue of a certain title is automatically linked to the next volume of the title in the "Next Issue" field. Since Detective returned to the original numbering with Rebirth, this will happen in every latest issue of Detective Comics. The manual override would be to include a link to the nonexistent upcoming issue, but we haven't been doing that because we would have to include the override for every new issue released and then remove it once a new one is released.

On the bright side, Detective and Action Comics are the only cases where this happens, but as with most stuff that was changed from the infoboxes during the portability switch, it is all out of our hands.