Beam weapons can't hit magnetized Hounds sometimes?

[Valfaun]

So, i don't know how general the bug is, as in whether it also occurs on other enemies or weapons, but i've been using Unairu's magnetizing blast on Sister Hounds and when i shoot them with my Quanta Vandal the beam will sometimes curve away from the target and deal no damage. it seems to be fine on the Sisters themselves, so i suspect it might be something with the hounds' hitbox