Note: This is just a minor bug and not that important.
My Specs: GPU RTX 2070super, CPU Ryzen 7 3700X, System Windows 10 Pro
Description: I discovered, that Kerbals can hover above ground on EVA by using their jetpack. I did this by pushing the Kerbal up with the jetpack thrusters, he lifted his feet a little (guess that's intended), but when I stopped pushing, he didn't get back down to the ground and stood a couple of centimeters above ground, this could be repeated several times and in the end he was about half a meter up or so. It does not work further, as he kind of hits a hard level when meeting a certain hight and falls back down to his half a meter standing point. This effect also eliminates itself when he starts to walk, he slowly comes down to ground, like he's going down some stairs.