TIDAL playback in LMS 8.0 only MP3

Hi all,

yesterday I upgraded my LMS to version 8.0 and since that, all my titles in the TIDAL playlist where played in MP3 format. Before the upgrade to 8.0 the TIDAL plugin played all in FLAC 44.1 KHz.
I reinstalled the TIDAL application in mysqueezebox.com, unchecked the plugin in LMS and restart LMS, but nothing changed.
I used the LMS 8.0 with Ubuntu 18.04.

Any ideas?

Best regards,
Christian