Bug 453758

Summary:	Okular fails to render some mathematical symbols in PDF
Product:	[Applications] okular	Reporter:	Unknown <null>
Component:	PDF backend	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	aacid
Priority:	NOR
Version First Reported In:	22.04.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	With Okular With Firefox viewer

Description Unknown 2022-05-13 19:11:54 UTC

SUMMARY

Okular does not correctly render some mathematical symbols in some PDFs I use as a student. I found a reference to a similar bug here https://bugs.freedesktop.org/show_bug.cgi?id=32237

I can't provide the PDF here for copyright reasons, but I could send it to a developer

STEPS TO REPRODUCE
1. Open the PDF
2. Note that some symbols are missing

OBSERVED RESULT
Some symbols are missing and make the document uninterpretable


EXPECTED RESULT
The document symbols should be interpretable

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.93.0
Qt Version: 5.15.3
Kernel Version: 5.17.5-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-7700 CPU @ 3.60GHz
Memory: 15.6 Gio of RAM
Graphics Processor: NVIDIA GeForce GTX 1070/PCIe/SSE2

Comment 1 Unknown 2022-05-13 19:12:12 UTC

Created attachment 148805 [details]
With Okular

Comment 2 Unknown 2022-05-13 19:12:26 UTC

Created attachment 148806 [details]
With Firefox viewer

Comment 3 Unknown 2022-05-13 19:13:48 UTC

I forgot to mention that the renderer is Poppler 22.05.0

Comment 4 Albert Astals Cid 2022-05-14 23:36:49 UTC

Okular doesn't do any pdf rendering so in any case this would be a poppler bug. Open an issue at https://gitlab.freedesktop.org/poppler/poppler/-/issues