No.
Passthrough works if 'sync playback to display' is disabled.
Checked on my S912
I've referred to "Last post on the above suggests turning off hardware acceleration. I'll try that later."
As mentioned before, I have "sync playback to display" disabled. It is disabled by default and I've double checked. I don't have such issue on any other device so this makes me think that maybe H96 Pro+ or at least some batches have it incorrect in hardware/firmware?