Pdfs sometimes import upside down

I've imported several pdfs comics into the iPad Yacreader app.

Two of them appear upsidedown, or every second page upside down.

Is this a known bug? I cannot work out how to fix it.

It must be the pdf files, YACReader doesn’t handle all possible pdf information in a page, it doesn’t matter in most cases but some pdfs contain extra information about actual content of the page.

Double check with a PDF app if the file is ok. If you can try with a cbz or cbr version of the comic.