Comet and Frost Wall sometimes do nothing if terrain is in the way

Frost wall and Comet frequently do nothing.

For example, when I cast Comet in Augury map from around the corner, there is an animation of me casting it, but the comet does not appear anywhere.

Frost wall sometimes does not spawn in some tight portions of the map, like thin bridges and other tight passages.

There is a general pathfinding problem in the game which impact any skill requiring a clear line of sight to work properly ( Shattering Palm for example got tons of problem with it's dash ) . Right now trying to cast something through a doorway is to be avoided ...