Multiple FX are missing for Necromancer powers. Ground FX for spawning in the Zombie Horde is completely missing, a ground FX for one of the Grave Knights is missing, and the bones falling from the corpse when dismissing any of the necromancer pets is missing.
I'm not sure when this started happening but in i24 they were working. A Council member by the name Michiyo helped me by sending me a video of what their i24 necro powers looked like, and I have recorded my own video of what they look like now. You can note yourselves the missing FX.
Michiyo's video of how summoning and dismissing looked in i24
My video of how it currently looks.
Edit: It should be noted that it looks this way for everyone else on Live as well, not just me.