In the Bible, virtually all of the footnotes are doubled. Ex: Mateo 18:3's footnote for "si" says "Es decir, si no os convertís" twice in the footnotes section. Glancing through, the only chapter I didn't see doubling on was Mateo 21. From what I can tell, this is limited to the Old and New Testament. I didn't see any doubling in any of the other books.
These should all be fixed in
These should all be fixed in the 2.7 update.