RPI 3/OSMC reboot when receiver is off

I post this on the RPI forum but thought there might be someone who knows something here….

Curious if this is a common problem or just unique to me. The HDMI output of my RPI 3 w/OSMC goes into the HDMI input of an Onkyo TX-NR626 receiver. What I’ve noticed is that if I need to reboot the system (or if I have a power outage) and the receiver is off the OSMC/RPI 3 sys does not reboot correctly, or at all. If the receiver is on (and iirc does not necessarily have to have the RPI 3 HDMI input selected) the system reboots just fine.

It feels like a h/w (status, maybe?) problem…as in a certain HDMI connection signal has not been detected so the RPI 3 system is unclear what to do.

Is this typical? Is there some kind of workaround? The receiver has some kind of HDMI pass-thru function when off but I’ve never messed with it.

Suggestions/feedback appreciated…thx…