Selector with Default Parameter Value

I found a strange behavior in #selector with Default Parameter Values.

I set UIRefreshControl as usual like this.

let refreshControl = UIRefreshControl()
refreshControl.addTarget(self, action: #selector(loadItems), forControlEvents: .ValueChanged)
...

In this same file, I have a function that takes a default parameter value.

func loadItems(page: Int = 0) {
  debugPrint("\(page)") // Need it later

  // Load items from API...
}

I wanted to use the default parameter value if users use pullToRefresh action. I did pullToRefresh action several times, and then I could see the logs like this.

// This is a Xcode console.
> 0
> 140622637638640
> 0

Why is 140622637638640 ? I expect to see 0 same as the first. Finally, I avoided having this strange behavior by adding another function.

override func viewDidLoad() {
    super.viewDidLoad()
    let refreshControl = UIRefreshControl()
    refreshControl.addTarget(self, action: #selector(pullToRefreshed), forControlEvents: .ValueChanged)
    ...
}
...

func pullToRefreshed {
  loadItems()
}

func loadItems(page: Int = 0) {
  // Here is debugPring(\(page))
  // load items from API...
}

I think it’s easy to avoid this bug, but it looks weird for me. I don’t want to create a function for only that. If you know about that, tell me about it. May be someone already mentioned the above. If not, I may file a bug report in JIRA.