Mine isn't as fancy as the Audi (just turns them off when it detects a vehicle ahead or when there's enough ambient street light). The fact it's off when there's street lights invites me to think it would always be off when crossing a bike (as bikes would tend to mostly be in areas with street lights).

It does work with motorbikes for sure, I don't think I was in the "bike in dark area" scenario yet, but here bikes are obligated to have lights on them so I'm pretty sure it would detect it just the same as a motorbike. Same with pedestrians if they're wearing high-viz (which they should in dark areas, if not a dark area, they're off anyway).