Casting Curse on debris fails to cast but consumes mana

Right now curses as a main skill are highly unreliable due to this bug.

This is a highly repeatable bug that has existed since day 1.

Find a map with debris that commonly occurs near walls etc. Cast the curst on the ground where the debris exists and there are sections where the animation to cast fires, mana is consumed but the curse effect fails to trigger at all.

Ideally the curse would be just form in the spot below the debris so they always cast correctly first time.

Would love it if GGG actually took a look at this long standing bug... It makes curse builds really frustrating to play with.