Sadly yes.
One Hue bulb, one IKEA bulb and sometimes a Hue LightStripe Outdoor switch to on after reboot or Shutdown and several minutes later startup.
Try to disable homebridge and restart deconz, to see if it’s from deconz.
But for me you are good to checks logs to search for a guilty, by defaut deconz don’t send order at start.
Perhaps a special rule in Phoscon ?