I have the same issue with my Control:15 when playing Tidal playlist - reassuring that it's just a software problem and I'm not alone. Rebooting works but only if you stay away from Tidal.

#1 QNAP TS-473, 210 streamer, 218 zone controller.
#2 QNAP TS-251, MS200.
[In Reserve] C15 and MC200.