I’m inclined to keep this open as a bug report until staff determines it’s either expected behavior or not fixable. The curator discussion I cross-referenced mentions other similar issues besides this one.
If you find other examples that don’t need to be fixed right away, definitely mention the URLs here in case they are helpful for diagnosing the issue.
And FYI this other bug report might also be related:
https://forum.inaturalist.org/t/duplicated-scientific-name-on-taxon-page/10777