Yes, eventually SGP will realise that PHD is settled, but it fired already exposures before as if it was not waiting for PHD to complete the dither ...
Guess both logs need to be correlated on time basis, all I can say is that I hear the shutter going off several times when it shouldn't ... and I was letting this one pass, but I'm not alone while chatting with Marco he said, hey I've got the exact same issue ...
Thanks for looking at it,
/Yves