@Darklyte It may boot with an incandescent. Mine does but acts wonky. Which hub do you have? I can set params in ST and they’ll take even when the switch is rebooting. Final option is to smash the down paddle as it boots to set the light off. Final final option is to disconnect the switch and wire it up on a test bench with a neutral.
Smart bulb mode is set the load to always get power. You want this if you the illum, hue, or other smart bulb. You then setup an association between the bulb between the switch and bulb.