Some letters are substituted with a square in reader
I have found that, for some documents, the reader modifies some symbols and letters with a square. Here I show some examples:
https://s3.amazonaws.com/zotero.org/images/forums/u8751710/xe6hyyc1jcycq8ezwq5j.png
https://s3.amazonaws.com/zotero.org/images/forums/u8751710/gyceoq43t3fla0kzbdvk.png
In this document, all combinations of "fi" are drawn as squares, and the same is true for the symbol "-".
In previous Zotero versions, the same document was displayed correctly. However, the problem is not consistent across all documents.
My current Zotero version is: 7.0.11 (64-bit), Windows 11.
https://s3.amazonaws.com/zotero.org/images/forums/u8751710/xe6hyyc1jcycq8ezwq5j.png
https://s3.amazonaws.com/zotero.org/images/forums/u8751710/gyceoq43t3fla0kzbdvk.png
In this document, all combinations of "fi" are drawn as squares, and the same is true for the symbol "-".
In previous Zotero versions, the same document was displayed correctly. However, the problem is not consistent across all documents.
My current Zotero version is: 7.0.11 (64-bit), Windows 11.
It is probably a problem of missing fonts:
https://forums.zotero.org/discussion/comment/468392/#Comment_468392
The file seems perfect when opening with other readers such as Adobe Acrobat. It appears that the problem is the same as the discussion you mentioned. What confuses me is that I have opened this same .pdf with the built-in Zotero reader with previous versions, and I never had this problem before.
Z 7.1-beta.14+2e9b9d407 (64-bit)
Seems to be ok.
https://s3.amazonaws.com/zotero.org/images/forums/u321/twt5jklnyeko6l7efc96.png
Alternatively, have you tried running Zotero in troubleshooting mode to see if it persists then?