[okular] [Bug 421780] New: Most ways of navigating a document not working (Qt 5.15)

[Bernhard Rosenkränzer]

https://bugs.kde.org/show_bug.cgi?id=421780

            Bug ID: 421780
           Summary: Most ways of navigating a document not working (Qt
                    5.15)
           Product: okular
           Version: 1.10.1
          Platform: OpenMandriva RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: bero at lindev.ch
  Target Milestone: ---

SUMMARY
Navigating a PDF document (probably any other content too) doesn't work
properly in okular 1.10.1 with Qt 5.15-rc2, Frameworks 5.70, Plasma 5.18.90.
The right-hand scrollbar works. As does grabbing the PDF with the mouse and
moving it up and down.
But all other ways to move around in the PDF seem to be ignored: mousewheel on
the pdf, arrow keys, trying to move the focus in the thumbnails panel,
PageUp/PageDown keys, ...

There are no error messages in the konsole session from which okular was
started.

Chances are for some reason okular isn't getting the relevant events when Qt
5.15-rc2 is used.


STEPS TO REPRODUCE
1. Update to Qt 5.15-rc2
2. Run okular
3. Try to navigate the document

OBSERVED RESULT
Mousewheel on the pdf, arrow keys, trying to move the focus in the thumbnails
panel, PageUp/PageDown keys, ... do nothing

EXPECTED RESULT
Mousewheel on the pdf, arrow keys, trying to move the focus in the thumbnails
panel, PageUp/PageDown keys, ... work as they always did


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: kernel 5.7-rc5, glibc 2.31, clang 10.0.1
KDE Plasma Version: 5.18.90
KDE Frameworks Version: 5.70 (with components that have had a 5.70.1 release
updated to 5.70.1)
Qt Version: 5.15-rc2

ADDITIONAL INFORMATION
Chances are for some reason okular isn't getting the relevant events when Qt
5.15-rc2 is used - other applications are not showing similar issues, so
chances are it is a changed behavior that needs to be worked around in okular
rather than a Qt 5.15 bug.

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