Is this a bug with the controller using bow skills?

(1) When the controller uses poison gas arrows and there is no enemy in the automatic aiming range, it cannot shoot far away and can only aim at the area around it. Is this a bug?
(2) When the controller uses skills such as Lightning Arrow and Frost Shot, if the enemy is too close, the arrow can only shoot one enemy and the other arrows disappear. Normally, the other arrows are mapped to a farther place! Is this a bug?
(3) When the controller is used for long-range shooting, the scattering angle is too large. Why not set a button that can be pressed to switch between long-range shooting and short-range shooting freely?