[Spoilers] The Kakashi in Chapter 604 has no headband. So he's a zetsu clone?

[meowNverse]

Explain why he didn't have it in chapter 604 last page?

its not like its glued to his head. He lost it vs pain a well, if i remember right.
Anyway it might be true that its some genjutsu or zetsu copy, because they remembered the image of kakashi without headband.