edges in mirages are buggy

including only this bug report #... but it happens in a bunch of maps with various mechanics

bug ref# 1,670,221,287

a breach had spawned on the edge of the mirage, I was barely able to activate it... however since it spawned a boss(from scarab) and it won't move from outside the edge... the breach cannot be completed

have had similar with abyss's, map bosses(in city square at least) and some other mechanics.