What i expected was:
1.Summon an Illusion Illager
2. Kill'em with bow and sword
3. They split on the first hit
4. Hit them after i found them
What i get is
1. Summon an Illusion Illager
2. Kill'em with bow and arrow
3. They split on the first hit
4.Hit all of them but none damaged with bow and sword
I think you are going to get a "Works as Intended" on this one. The 4 images are all illusions. The illager is actually somewhere near the center of the 4 and can be tracked and targeted by looking for the potion effect particles he emits.