'Solo' behavior

OK try Tapemachine style

Yes, the behaviour might seem slightly odd. Both ‘While Record Enabled’ and ‘While Record Running’ switch off all monitoring buttons when you commence playback, but this is supposedly ‘logical’ since the function of both these options is that the monitor buttons of any audio tracks should be active when, and ONLY when, the channel is record enabled… and this whether you are in playback or record mode.

Tapemachine style might provide a solution for your needs since like manual mode this does not de-activate the monitor buttons when you hit play. Otherwise, I am out of suggestions.