https://bugs.kde.org/show_bug.cgi?id=442503
Bug ID: 442503
Summary: Scroll Page Up teleports to top of previous page
Product: okular
Version: 21.08.1
Platform: Debian testing
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: okular-de...@kde.org
Reporter: onkekabo...@hotmail.com
Target Milestone: ---
SUMMARY
In non-continuous scrolling mode, scrolling backwards over a page boundary
(either with scroll wheel, Shift-Space or PgUp) has the effect that the top of
the previous page is shown. In earlier versions the bottom of the previous page
was shown, which is the expected behaviour (so that Scroll Page Down and Scroll
Page Up actions are each others' inverses).
STEPS TO REPRODUCE
1. Open any pdf with more than one page in Single Page, non-continuous view
mode. Size the window so that a vertical scroll bar is showing.
2. Navigate to the top of page 2 (e.g. by pressing the space bar twice)
3. Scroll up (e.g. by pressing Shift-Space or PgUp, or by mouse wheeling up)
OBSERVED RESULT
Okular displays the topmost part of page 1
EXPECTED RESULT
Okular displays the bottommost part of page 1
SOFTWARE/OS VERSIONS
Operating System: Debian GNU/Linux
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
Kernel Version: 5.14.4
OS Type: 64-bit
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-7700 CPU @ 3.60GHz
Memory: 31.2 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1070/PCIe/SSE2
ADDITIONAL INFORMATION
This bug is not present in version 20.12.3, while it appears in 21.08.0 and
21.08.1.
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