For some DjVu files the internal OCR layer after extraction is incorrectly assigned to pages while presenting in Page namespace in Wikisources. Few examples:
1. File:Ossendowski - Ázsiai titkok, ázsiai emberek.djvu
** OCR for pages 1-13 is placed correctly
** page 14 (https://hu.wikisource.org/w/index.php?title=Oldal:Ossendowski_-_Ázsiai_titkok,_ázsiai_emberek.djvu/14&action=edit&redlink=1) shows OCR layer from page 16
** page 15 shows OCR layer from page 17
** for all subsequent pages OCR is shifted for few pages; the shift increases gradually), reaching 22 pages at the end of the book: page 250 shows OCR layer from page 272.
2. File:Маркъ Чертванъ - Мирные завоеватели.djvu
** the shift starts at page 9 (pages 1-8 shows correct OCR) reaching 4 pages at the end ot the book; eg. page 70 (https://hu.wikisource.org/w/index.php?title=Oldal:%D0%9C%D0%B0%D1%80%D0%BA%D1%8A_%D0%A7%D0%B5%D1%80%D1%82%D0%B2%D0%B0%D0%BD%D1%8A_-_%D0%9C%D0%B8%D1%80%D0%BD%D1%8B%D0%B5_%D0%B7%D0%B0%D0%B2%D0%BE%D0%B5%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D0%B8.djvu/70&action=edit&redlink=1) shows OCR layer of page 74
Page numbers relates to DjVu page numbering (not page numbers printed in the books). Standard DjVu software shows OCR layes for **all pages** in the right place, so the problem is either in MediaWiki DjVu handling or in ProofreadPage.