Volume control in KDE Connect is not working in Plasma 5.20 anymore.

There is a problem with volume control in KDE Connect.
Volume up, volume down and mute commands are not working anymore.
Shutdown, suspend, turn off and on screen commands are working correctly.

I reported this as a Bug 117936.
https://bugs.kde.org/show_bug.cgi?id=430115

It was an update of KDE Connect app in Playstore, ver. 1.16.0.
And now it works again!
All sound commands are working again.

Problem solved.
I hope so it will never appear again