Some changes in Notifications > Application Settings do not take effect.

I described below the steps needed to reproduce the issue.

I wanted to add a login/logout sound, thus I went to:
System Settings > Notifications > [Configure] > Plasma Workspace > [Configure Events].

In "Login" I selected "Play a sound", and provided the following file: /usr/share/sounds/mysound.wav
I also selected "Log to a file", and provided the following path:
/home/steddy/Desktop/login.txt

I did the same for "Logout". I selected "Play a sound", and provided the same path as before:
/usr/share/sounds/mysound.wav
Also I selected "Log to a file", with the following path:
/home/steddy/Desktop/logout.txt

Now, these changes only work at logout; i.e. the sound plays and the following information is written into logout.txt:
- KNotify Mon M08 5 17:54:12 2019: Logout

But at the login no sound is played, and no information is written in login.txt.

I found a similar issue here, but the proposed solution doesn't work for me:
https://forums.opensuse.org/showthread.php/525384-System-fails-to-play-a-sound-for-the-login-event

The settings I changed are saved into the .config/plasma_workspace.notifyrc file.
I uploaded it here: https://pastebin.com/TScCYn2j