SUMMARY

Kde 5 setting broken in dolphin. 
I want to switch between double click and single click.  

I have followed numerous instructions on different sites to try and get double click working for me. As it defaults to single click. 

Neither of these options work for me.

https://superuser.com/questions/1426077/how-to-enable-and-disable-double-click-mouse-options-in-kde
https://forum.kde.org/viewtopic.php?f=14&t=156480


STEPS TO REPRODUCE

systemsettings5

1. Under Work-space section > Desktop Behaviour > Work-space > Click behaviour > Single/Double Click Option > apply

2. Restart - for ensure nothing else could be causing issues. no joy.

Or

1. vim ~/.config/kdeglobals
...
[KDE]
...
SingleClick=false
 
2. Restart - for ensure nothing else could be causing issues. no joy.

OBSERVED RESULT

Changing between single click double click in 
 ~/.config/kdeglobals

SingleClick=false

Dose not enable double click in dolphin. 

EXPECTED RESULT

I should be able to double click to open and single click to select files / folders in dolphin. When I set the 'SingleClick=false' or select the 'double-click to open files and folders(single click to select)'

Changing these settings should change the behaviour. 

Restarting does not change this behaviour. 
Restarting plasma shell does not change this behaviour.

This is similar to these closed issues.

https://bugs.kde.org/show_bug.cgi?id=357404
https://bugs.kde.org/show_bug.cgi?id=348946

SOFTWARE/OS VERSIONS

Dolphin version : 19.04.3

Linux aaron-pc 5.2.4-1-MANJARO #1 SMP PREEMPT Sun Jul 28 09:02:51 UTC 2019 x86_64 GNU/Linux

Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.16.3-2
KDE Frameworks Version: 5.16.3-2
Qt Version: 5.13.0-7.1 

ADDITIONAL INFORMATION

pacman -Ss kde | grep installed
extra/dolphin 19.04.3-1 (kde-applications kdebase) [installed]
extra/dolphin-plugins 19.04.3-1 (kde-applications kdesdk) [installed]

extra/oxygen 5.16.3-1 (plasma) [installed]

extra/plasma-desktop 5.16.3-2 (plasma) [installed]
extra/plasma-meta 5.16-1 [installed]
extra/plasma-workspace 5.16.3-2 (plasma) [installed]
extra/polkit-kde-agent 5.16.3-1 (plasma) [installed]

extra/qt5-base 5.13.0-7.1 (qt qt5) [installed]


local/qt5ct 0.39-2
    Qt5 Configuration Utility


Console log when starting dolphin

dolphin
qt5ct: using qt5ct plugin
qt5ct: D-Bus global menu: no
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/tags.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/tags.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/trash.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/trash.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kf5.kio.kio_tags: tag fetch failed: "Failed to open the database"
kf5.kio.kio_tags: "tags:/" list() invalid url
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/file.so'
kf5.kio.core: "Could not enter folder tags:/."
kdeinit5: Got EXEC_NEW '/usr/lib/qt/plugins/kf5/kio/thumbnail.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/qt/plugins/kf5/kio/thumbnail.so'
qt5ct: using qt5ct plugin
Qt: Session management error: networkIdsList argument is NULL