Force Master AoE skills don't follow terrain, cannot fight on slopes

[y3kcjd5]

Force Master AoE skills like Impact and Dragon Whorl always fire horizontally, making them ineffective outside melee range on slopes and stairs. For a character class that fights at range, a bug like this is pretty game-breaking, considering the prevalence of terrain elevation changes. Skills like this should either

a) follow the terrain elevation so that enemies on the ground are always hit or

b) account for and follow the vertical angle of the crosshairs when firing.