Within the pipeline dialog, the return level meter pulses full scale, indicating a healthy return signal, but I only see a flat-line blue (Return) waveform, the red waveform is displayed correctly. This worked OK in the past for me, is pipeline broken?
Same behavior with mono and stereo versions and on different audio channels.
Firestudio Project interface.
Studio One 126.96.36.199910 Win x64 (Built on Mar 20 2018)