[okular] [Bug 421822] 'Scroll Page Up'/'Scroll Page Down' actions do not scroll by pages

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=421822

--- Comment #3 from quantera at gmail.com ---
It is a bit strange that the problem doesn't reproduce in your environment.
Initially I asked about the problem in arch's forum (here:
https://bbs.archlinux.org/viewtopic.php?id=255604), and waited for somebody to
confirm the problem before submitting the bug report - to make sure that the
problem is not specific to my machine. 

I see that arch's package just builds okular as is, without adding any
distribution-specific patches (here is the relevant link:
https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/okular),
therefore I would expect the problem to be easily reproducible. 

In addition, the problem does not seem to be caused by okular's dependencies,
since when I downgrade okular to a previous version (without changing anything
else on the machine), the problem disappears.

I tried to bisect the problem in order to find the exact commit which
introduced the problem, but unfortunately I am unable to execute the manually
built okular: when I try to run it, I get an error message saying: "Unable to
find Okular component: The shared library was not found", which is somewhat
strange, since I build the program with the following arguments:

cmake -DCMAKE_INSTALL_PREFIX=<path to some dir in my homedir>
-DCMAKE_BUILD_TYPE=Debug <path to checked out okular's source

and then 'make install'

Moreover, I see that the built exe is built with a correct RUNPATH (by running
'objdump -x' on it), and running ldd on okular I don't see any missing libs.

Any suggestions about how I can proceed with finding the problem? If I just
have been able to compile the okular myself, I would have been able to provide
a much better input after bisection

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