Thank you so much for all your feedback!
Yeah, in regards to the AoE spell it destroys the particle effects on collision but we had to disable damage dealt to the boss because it was triggering multiple times and insta-killing the boss xD We only got around to disabling the damage but not the actual particle destruction which is why it doesn't pass through him.
I remember playing your adorable cat game! Thanks again for playing our game, I'm really glad you enjoyed it :)