There is a problem in CoreElec again.
If librespot is activated, you cannot switch live TV channels (TVHeadend) anymore. The screen is black and TVHeadend seems to be crashed.
TVHeadend is 4.2 9.0.115,
TVHeadend HTSP Client is 22.214.171.124.
It seems to be independent of the audio settings of librespot. It occured as well with ALSA and Kodi audio mode.