[Genshin Impact] Starfell Sword Flying Enemy AI Bug
Elevating a flying enemy with Starfell Sword seems to greatly confuse it. If you stay in close range, it won't see a need to move towards you (and thus off the rock). However, since it's on a different height from you, it won't bother trying most attacks. Because of this, until the rock explodes, you're free to pummel it with ranged attacks.
This is known to work on Ruin Hunters and Eyes of the Storm. I know the Eye of the Storm can break out of this prematurely with its wind zone attack; I don't currently know if Ruin Hunters can break out with a bombardment attack, as this situation simply never came up.