Once when I was an FO, we had the FA call during sterile cockpit while we were descending into PIT to tell us the temperature was too hot. Later on the ground, while I was doing the walkaround, the captain told her not to call during sterile cockpit with trivial things. When I got back in the airplane, they were having a full-scale shouting match.

She was an older FA with an attitude problem to begin with.