This bug is still present in Ubuntu 20.04.2 LTS, running KDE Plasma.
I can duplicate the mystery "Speech Dispatcher" items in the volume control and the "killall speech-dispatcher" temporarily works around the bug.
This bug is still present in Ubuntu 20.04.2 LTS, running KDE Plasma.
I can duplicate the mystery "Speech Dispatcher" items in the volume control and the "killall speech-dispatcher" temporarily works around the bug.