There are 2 different results between Xcode 15 and Xcode 16

I have an macOS Application that communication with USB devices. There are 2 different results between Xcode 15 and Xcode 16.

Do I forget somethings in Xcode 16?

Results

Xcode 15:

It works very well

Xcode 16:

USB communication error occurred.

If I try to modify Instrument's openUSB() function to
func openUSB() {
    sleep(1)
         .
         .
         .
}
It works very well.

My Application code

class AppDelegate: NSObject, NSApplicationDelegate {

    override init() {
        super.init()
        _ = Controller.shared
    }
    ...
}

class Controller: NSObject {
    public static let shared = Controller()
    public private(set) var instrument: Instrument

   private override init() {
        super.init()
	      self.instrument = Instrument()
    }
}

class Instrument: NSObject {
    override init() {
        super.init()
        openUSB()
    }
    
    func openUSB() {
         .
         .
         .
    }
}