title: Unity run XR mode in windowed mode on Hololens 2
body: <p>I want to run XR function with windowed mode on Hololens 2.<br />
  However, if I enable XR Plug-in Management : Initialize XR on Startup, it would run in fullscreen.<br />
  I try to disable this checkbox and init XR at the runtime but it still run in fullscreen.<br />
  I had setted <code>Screen.fullScreen = false</code> but it didn't work either.<br />
  Does anyone know how to run XR function with windowed mode on Hololens 2?<br />
  Thanks in advance for any suggestions.</p>