I spoke with the dev team and this is not a bug. Here is the official statement:
“TIDAL has recently updated their Terms of Service. Under these new terms, stem separation and the mixing of TIDAL streams with third-party streaming services are not supported. We realize the inconvenience this change may cause to you and appreciate your understanding on this matter. DJ software providers are required to adhere to these terms and we continue to work closely with TIDAL to explore solutions to ensure a creative and flexible access to the TIDAL catalog for our users. Other playback related features are unaffected and continue to operate as expected. Thank you for your understanding and continued support.”
