Bug 408195

Summary:	unrendered pdf regions with trim margins and facing pages on 4k screen
Product:	[Applications] okular	Reporter:	Kevin <kjslag>
Component:	general	Assignee:	Okular developers <okular-devel>
Status:	REPORTED ---
Severity:	normal	CC:	kjslag
Priority:	NOR
Version:	1.7.1
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	screenshot

Description Kevin 2019-06-01 23:09:26 UTC

Created attachment 120489 [details]
screenshot

SUMMARY
When I view certain pdfs with okular using the trim margin and facing pages feature, some regions of the pdf don't render and just appear white. See attached screenshot of this pdf:
https://docs.kde.org/trunk5/en/applications/fundamentals/fundamentals.pdf
This seems to only occur when the okular window is at least ~3000 pixels wide; eg, a fullscreen okular window has this issue on my 4k screen.

STEPS TO REPRODUCE
1. Open https://docs.kde.org/trunk5/en/applications/fundamentals/fundamentals.pdf
2. Make okular window at least ~3000 pixels wide.
3. Enable trim margin
4. Use facing pages

OBSERVED RESULT
Large unrendered region, as seen in screenshot.

EXPECTED RESULT
Everything should be rendered.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.1.5
(available in About System)
KDE Plasma Version: 5.15.5
KDE Frameworks Version: 5.58
Qt Version: 5.12.3