Ice Wall + Spell Cascade causing a Cascade of bugs

So in the attempt of dealing a little extra damage as a burst with my comets I combined Frost wall + Spell Cascade + Magnified Effect. And when it works its great. Enemies get pushed back or fully surrounded by walls which lets me then cast Comet in peace, but the first thing I noticed was some of the walls staying up visually after I break them.
In itself not a big deal but theres another problem that shows up along with it sometimes enemies are clipping into the walls. This is just my assumption but as enemies try to run around the edges of the ice walls and as there are multiple of these zones it somehow gives them leeway to slip in. And once they are inside the also ignore the existence of the next wall as theres rarely room between them. Especially enemies with very low collosion and high speed like those in the Azak Bog tend to walk through 3 layers of actually perfectly intact ice wall. And then through two just visually intact ones from the first bug. And its grinding my gears