Dear
I found that several things in KiCad are not working, like footprint wizard, help - manual, scripting …
The problem lies in the build options: It was built with scripting "disabled"
After a new build with enabled build options in the file PKGBUILD everithing is working, even the help, after I copied the documentation pdf’s from the help site https://kicad.org/help/documentation/ to the folder “{install-dir}\KiCad\share\doc\kicad\help\en”.
(check for “... -DKICAD_SCRIPTING=ON -DKICAD_SCRIPTING_MODULES=ON -DKICAD_SCRIPTING_WXPYTHON=ON ...” before building it…)
The build result is not installable, so one has to do it by hand (whatever this means 
).
I copied the build result over the existing files of the installed version and everything was fine.
Best regards, Daniel