I really wish that the AC App would indicate when Business had boarded full, not just booked full.

I've been on a few flights where I gave up on my upgrade and just boarded, only to have the plane leave with an empty J seat or too, someone missed a connection etc.
I've tried asking the gate staff, but they just not look at the screen and say: oh yeah it's full (only to find out later it's not)

Nothing worse than waiting around to board when all the seats in business are already full