None of this is “flying outside the envelope” or “exceeding limitations”.
Probably. However, I'm confident that the 787 is not approved for aerobatics
aerobatic maneuver means a maneuver where a change in the attitude of an aircraft results in a bank angle greater than 60 degrees, an abnormal attitude or an abnormal acceleration not incidental to normal flying;
I can roll a non aerobatic airplane, and not exceed any limitations, nor fly outside its approved envelope, but it's still aerobatics, and not permitted for non aerobatic airplanes.