Search for PDF files wrongly finds Web Links

edited 23 days ago
When I do an Advanced Search to find the PDF files in my library, it identifies Web Links finishing in "[...].pdf" as "Attachment File Type" being "PDF":

188BET靠谱吗https://s3.amazonaws.com/zotero.org/images/forums/u265723/zqwvtymnrr10zc35woxl.png
I think that this is not correct.

If I try to find that Web Link from the Advanced Search as "Webpage", it fails:

188BET靠谱吗https://s3.amazonaws.com/zotero.org/images/forums/u265723/gq02d2k26fc05vbpiol8.png

How can I obtain only the PDF file attachments and not the Web Links?

188BET靠谱吗Zotero 7.0.3-beta.2+10d27b8f6 (64-bit)
Windows 10
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