Pantheon W doesn't work (no stun, no damage)

When the enemy uses any kind of moving skills, it doesn't do anything. Before rework, if you cast W and the enemy flashes right before the hit (but Pantheon already jumped), the enemy flashes but still get stunned and damage. But, after rework, it you flash, then you can just ignore Pantheon's W. (same as empowered). All kind of targetting skills do the damage if you cast it. However, Pantheon's W is easy to dodge, something like flash, Ezreal's E, Katarina's E, Cassadin's R, and so on.

Is this a bug or intended system?