Did a couple of tests on the H tonight.
I can only say that this applies to my own so cannot confirm about others experience.
1) The H cannot fly below its starting point: Myth!, tonight I was on a hilltop and flew to approximately minus 150 feet.
2) Starting in smart mode when close to the H will result in it flying off in a random direction: Myth!, I put myself about 8 feet from the H and took off in smart mode, it just went straight up, refused to come any closer and would only fly away from me until it was outside the 26 foot circle.
Just my personal observations
I can only say that this applies to my own so cannot confirm about others experience.
1) The H cannot fly below its starting point: Myth!, tonight I was on a hilltop and flew to approximately minus 150 feet.
2) Starting in smart mode when close to the H will result in it flying off in a random direction: Myth!, I put myself about 8 feet from the H and took off in smart mode, it just went straight up, refused to come any closer and would only fly away from me until it was outside the 26 foot circle.
Just my personal observations