This is infuriating me for a while now. Controlled Explosion says that “Static Orb explodes at target” (i think that location is missing, but anyway), but the explosion dosen’t happen at your cursor, it always occurs (i think) 1 meter forward. On 99% of the cases when you cast something, monsters start chasing you, and i always have to predict where the monster will be, which in the current case, either makes the explosion land too soon or miss completely. It’s even worse if the monster is faster than normal.
I can see it being useful if you are trying to hit a monster off screen, but in most cases that is unecessary and ends up being misleading on short range cases, which has alredy killed me a few times on endless arena.
So yeah, my suggestion is making the explosion ending directly upon the cursor and not a short distance there after, as it contradicts directly what the passive says.