I have issues with the passenger seat belt indicator when there's no passenger.
I have this one intermittently as well. Usually when under heavy braking or hard turns. Unfortunately there are no gremlins under the seat.
My turn signal doesn't always deselect when unwinding the wheel from a left turn. Might have to do with the steering wheel being on the wrong side. Seriously, though, I think it is a mechanical fault in the switch itself.
I also have occasional and really loud pops coming from the radio when I listen to AM stations (sounds like some sort of filter popping on and off). At first I thought rocks were hitting my windshield until I heard it while I was stopped. McLaren said to just wait for the Feb update which will hopefully fix it.
I've never had any issues with the fob. I keep it in my pocket and that seems to work fine.
I'm just waiting for the Iris update to have my issues looked at. I'm sure they are all fairly easily remedied once I bring it in.