Highlighting weirdness on some PDFs on iPad

I've tried highlighting a sentence in a PDF on the iPad (the sentence starting with 'But' in this image)

https://www.icloud.com/iclouddrive/0a89RC68iEbkm39Q8JepjppcQ#IMG_CA8DE85201D3-1

You can hopefully see that it 'randomly' selects text from all over the page. Yet if I use the built in iPadOS PDF annotation functionality, I can highlight normally. Similarly, if I use the desktop Zotero to highlight, this also works fine. This is not the first PDF I've encountered this with, although most do work correctly.
  • I have the same problem I think (though I can't view your image to make sure it's the same).
    I encountered it with this specific paper as well as others: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6902278/
    I downloaded it using the desktop "Find available PDF" (on mac) and then switched to the iPad and downloaded it using Zotero cloud.
    Reinstalling zotero on the ipad doesn't help either.
    Thank you!
  • As per my last comment - I'm using Zotero version 1.0.3 Build 5 of the ios app, on a iPad Pro, ios version 15.4.1
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