[okular] [Bug 469052] New: document jitters on selection and window resize when hi-DPI scaling is used

[Flupp]

https://bugs.kde.org/show_bug.cgi?id=469052

            Bug ID: 469052
           Summary: document jitters on selection and window resize when
                    hi-DPI scaling is used
    Classification: Applications
           Product: okular
           Version: 23.04.0
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: bugs.kde.org at derflupp.e4ward.com
  Target Milestone: ---

Created attachment 158484
  --> https://bugs.kde.org/attachment.cgi?id=158484&action=edit
screencast showing the jittering

When starting or aborting a text selection and when resizing the Okular window,
the document content jitters slightly (see attached okular-jitter.gif). It
seems the problem only occurs when the UI is scaled. I use 1.25 for
QT_SCREEN_SCALE_FACTORS (configured to 125% via systemsettings). When starting
Okular with unset QT_SCREEN_SCALE_FACTORS, I cannot reproduce the problem.

I started to notice the problem first with the recent version of Okular
(23.04.0).

Operating System: Arch Linux 
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9
Kernel Version: 6.2.12-arch1-1 (64-bit)
Graphics Platform: X11

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