ADDITIONAL SYSTEM INFORMATION :
Happens on Windows 10, Windows 7, and latest macOS (10.13.x currently)

A DESCRIPTION OF THE PROBLEM :
Hot swapping USB audio devices (Plugging in and Unplugging) can cause AudioSystem.getMixerInfo() to return continuous incorrect Mixer.Info's.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
You will need 2 separate USB audio devices (preferably different manufacturers, so they have different names in Mixer.Info.

Steps:
1) Plug in USB audio device #1
2) Unplug USB audio device #1 and plug in USB audio device #2 into the same USB port (You should do this quickly).

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
AudioSystem.getMixerInfo() should return the new name of the USB audio device in a timely manner and also remove the no longer connected Audio device from the returned Mixer.Info array
ACTUAL -
AudioSystem.getMixerInfo() continues to return the USB device name of USB device #1. It never updates to show USB device #2 even though it is now connected.

---------- BEGIN SOURCE ----------
// This is just a continuous loop to print out Audio Device changes.
public static void main(String[] args) throws Exception {

        int count = 0;
        List<String> control = new ArrayList<>();
        while (true) {
            Mixer.Info[] infos = AudioSystem.getMixerInfo();

            List<String> names = new ArrayList<>();
            for (int i = 0; i < infos.length; i++) {
                names.add(infos[i].getName());
            }

            if (!control.equals(names)) {
                control = names;
                System.out.println("\n\n============== try " + count + " ===============");
                System.out.println(control);
            }


            count++;
            Thread.sleep(5000);
        }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
None known

FREQUENCY : always