What is happening:
Candy rain can cause mobs to freeze in one place and go into an endless attack animation loop. They do not do damage, and cannot be damaged.
Breaking a mobs pathfinding (running away, jumping over something to make them take a new route) while they are in/near a Candy Shower is one way to cause this. I have not tested other skills, but none of this seems to happen normally.
What should be happening:
Candy Shower should not glitch mobs out.
Steps to reproduce the issue:
1 - Go the hexagonal rocks in the heartlands, where the lv45 naiads are
2 - Get the attention of a naiad, then step onto one of the small raised platforms where they spawn
3 - Cast Candy Shower, then walk towards the edge of the platform until they run away
4 - They will stop somewhere nearby, begin the attack animation loop, and turn invincible
Game client version:
Linux 64 bit
Crash logs or exceptions generated: