https://bugs.kde.org/show_bug.cgi?id=517422
Bug ID: 517422
Summary: Regression in annotation performance
Classification: Applications
Product: okular
Version First 25.12.3
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: PDF backend
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
There is a noticeable regression in the annotation tools with PDFs. I'm not
sure if it has happened recently after the update to 25.12.3 or due to other
changes (e.g. Qt 6.11 or Frameworks 6.23.0). Some examples where this
regression is very clear:
Use the yellow highlighter to select some text. The preview works smoothly as
before, after selection is done it takes 2-3 seconds for the text to actually
become highlighted.
The inline note suffers from a bad delay that makes very difficult to write any
text. After selecting the area for the note, from typing till the text is shown
can take several seconds.
Undoing any annotations with Ctrl + Z, for example, also takes several seconds
when before it was almost instantaneous.
I cannot reproduce this issue with e.g., djvu files, just with PDFs.
STEPS TO REPRODUCE
1. Open a PDF
2. Use the annotation tools as explained above
OBSERVED RESULT
Tools feel very laggy and delayed.
EXPECTED RESULT
Tools should feel fast and responsive as before.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.6.2
KDE Frameworks Version: 6.23.0
Qt Version: 6.11.0
Kernel Version: 6.19.6-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 22 × Intel® Core™ Ultra 7 155H
Memory: 32 GiB of RAM (30.9 GiB usable)
Graphics Processor: Intel® Arc
Manufacturer: LENOVO
Product Name: 21KDS00600
System Version: ThinkPad X1 Carbon Gen 12
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