Blurry PDF at some zoom levels in version 7.0.11

warwickmm · 2024-12-06T18:19:29+00:00

I updated to version 7.0.11 (64-bit) on Linux and noticed that a certain PDF is blurry when the zoom level is set to "Zoom to Page Height".

Version 7.0.10 at "Zoom to Page Height":

https://s3.amazonaws.com/zotero.org/images/forums/u7554954/xhza1b9uttqmt72o3sil.png

Version 7.0.11 at "Zoom to Page Height":

https://s3.amazonaws.com/zotero.org/images/forums/u7554954/mk4u16dy6mr80nzcenzj.png

Version 7.0.11 zoomed out one step from "Zoom to Page Height":

https://s3.amazonaws.com/zotero.org/images/forums/u7554954/6feus9anygoikd4z4hoq.png

Version 7.0.11 zoomed in one step from "Zoom to Page Height":

https://s3.amazonaws.com/zotero.org/images/forums/u7554954/tf21qqeg60e8fsxtlpae.png

warwickmm · 2024-12-06T18:24:13+00:00

The problematic PDF can be found here:

https://wiki.epfl.ch/edicpublic/documents/Candidacy exam/millerdavenport2010.pdf

martynas_b · 2024-12-09T13:07:00+00:00

Can you notice this in other zoom modes?

warwickmm · 2024-12-09T16:18:04+00:00

I have not noticed this in other zoom modes. When zooming in and out using Ctrl +/-, the text is momentarily blurry before regaining focus (this was the behavior in 7.0.10 as well). At the "Zoom to Page Height" level, it just remains blurry.

I also found that the problem occurs with a number of PDFs (but not all of them). Here's another one:

https://comptes-rendus.academie-sciences.fr/mathematique/item/10.1016/j.crma.2008.03.014.pdf

The problem also seems to occur with a lot of IEEE Transactions articles as well.

warwickmm · 2024-12-10T16:42:13+00:00

This occurs with both my laptop screen (1920x1200) as well as an external screen (2560x1440).

warwickmm · 2024-12-11T17:29:33+00:00

Another interesting observation. If I:

1. Zoom to page height (this is blurry).
2. Check Split Horizontally.
3. Uncheck Split Hoizontally.

The page is no longer blurry. However, if I then Zoom to page width and then Zoom to page height, the page is blurry again.

warwickmm · 2024-12-17T19:06:11+00:00

This sounds similar to

https://forums.zotero.org/discussion/comment/480964#Comment_480964

However, I'm still experiencing this in 7.0.11 and 7.0.12-beta.1+31bbf2acf (64-bit) on Linux.