[Zotero 7 Beta] Lines in a PDF file

I have one PDF file that displays lines in Zotero:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/frp9br9n9midcmw7nxg8.png

The lines do not show in Adobe Acrobat (or any other PDF Viewer):
https://s3.amazonaws.com/zotero.org/images/forums/u265723/umrtt25ibvogy7nu7s31.png

The lines also appear in the original PDF.js version https://mozilla.github.io/pdf.js/web/viewer.html, so the problem is coming from PDF.js.

Is it possible to fix this?
Otherwise, is there anything I can do to the PDF file to make it appear normally in Zotero?

Zotero 7.0.0-beta.87+f59a4da7f (64-bit)
Windows 10
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