Track preview has changed in 1.6. Preview will go to the first available channel’s pair member that is not open.
Example, Layer A+B = channel 1+2:
I don’t fancy what it has changed into. When both layers have fader down, but I want to preview layer B, I would expect to simply cue channel 2. Now it defaults to channel 1 for preview, because that’s the first available fader down (channel 1)…