On an Octagon SF8008, when you put box in standby HDMI video signal doesn't stop, it's still present.
You can see this: (depending on the skin, picture may be different)
PYDRby.jpg
UsingGlamourAuraFHD skin f.i., gives a black screen, but video signal is still present, as TV says: HDMI input signal 1080p
I've tried Open Eight image, and it doesn't happen. (And TV says: no HDMI signal)
I've seen both drivers are 2019-10-12.
Could this be solved ?