If this is an intended fix, Valve PLEASE let us know. It has been driving me absolutely crazy.
Previously you could use spectral wall past other walls, and when it hit thicker walls it could not pass through, it would deploy immediately.
I cannot express enough how painful this bug has been for me. If this is a deliberate change to prevent McGinnis from hitting walls blind (behind cover) then please tell us, this drastically changes how wall can be used. Also for what it's worth, hitting a good wall on an enemy you can't see is very satisfying.