(Weird?) behavior with Codable and properties

CodableProperties.swift

// Decoding a `Bar` gives you the same UUID that it was encoded with
struct Bar: Codable {
    let id: UUID
    
    init() {
        self.id = UUID()
    }
}

// Decoding a `Foo` gives you a new UUID
struct Foo: Codable {
    let id = UUID()
}