Illusion illager bug

So i was messing with the new illager and i found out 3 bugs here are the 3 of them:

1. When you use subtitles it says "evoker prepares spell" and other text with 'evoker' in it.
Edit: it also says 'skeleton shoots'

2. As many people know creepers drop disks when killed by another mob well, when the creeper dies by a arrow from the illager it doesn't drop a disk so plz fix

3. Spiders attacks the illager