rufus The point why I'm writing this is that there is no app on my system working with TTS.
Quik says no tts service available, same with osmand.
Go to Settings -> System -> Language and region -> Languages -> Speech -> Text-to-speed output -> Preferred engine:-
Select Sherpa in the list, even if it shows as selected already. Assuming this 'bug' is still in place, because it's a list of options where only 1 can be selected, for some reason it always shows (showed) something as selected even if it wasn't. So click on it to be sure. Then you can click on the cog icon to configure Sherpa.
I've just been through OSMAnd but I'm once again lost in the sea of settings and cannot find where to set the TTS, asides from enabling the announcing of street names. I'm sure there was another option somewhere but the memory is lost to me.