The reskins don't seem to have had VFX types adjusted for them:
This one is the Lawful Protector Halberd with a yanyuedao top.
If VFX can not be fixed for weapons that they obviously don't work for, how about just disabling them for that particular appearance option? That way you won't get all of this wonky shit that goes against the carefully curated aesthetics of Arelith.