Playing high fall sound when sneaking to the ground in fly mode(creative)

So now I am back with another bug and I hope this bug isn't reported yet,
I also think that this bug affects all versions before 0.14.3, but I can't test it anymore. So when I'm in fly mode(creative) and I SNEAK down to the ground, it plays the high or low fall sound. I think that's a bug because it isn't the same in PC version. PS: Sorry for my bad english, I'm German.

Video where I am showing it: https://youtu.be/wCF6eR64epk