it is bugged. For instance, if you do not put strobes on during taxi (next to Nav if IFR) and the mandatory Beacon, then you get point deductions. Asobo forgot you only use strobes when cleared for the runway and not when cleared for taxi.
I’ve never been dinged for not having the strobes on - I always put them on when entering the runway. But some planes don’t have beacons, so in those you’d need strobes on. In what plane did that happen?