Assuming you have both pickups balanced (i.e., like they are at full volume), this isn't a single coil issue. Single coil pickups with both pickups balanced are no different than hum cancelling pickups.
However, some rooms are just horrible for any bass. There is a room up on the top floor of a tall building in St. Louis (it used to be called the Lawyer's Club) where I could not use my MTD535. Now, that's about the quietest bass out there, with active soapbars, etc., and it literally buzzed, picked up radio stations, etc. My other basses (active, single coil, passive, whatever, were fine).
Sometimes, there's just a strange interaction with certain instruments and preamps and certain rooms. Luckily, that is the only room and only bass in 30+ years of gigging that I've ever had a problem with.
I'm approaching a 'hum cancelling free zone' at this point. I have no interest in anything but nice single coild, relatively vintage sounding J pickups at this point, and have zero issue with hum, even when favoring the bridge pickup a bit.