Wireshark pane couldn't display
I mean when I open the Wireshark, the layout supposed to display three pane(Packet List, Packet Details &amp;Packet Bytes)


If you double-click on Wireshark, it will not show the three capture file panes, because there's no capture file to show!  That's been the case for several releases now, since before the 2.0 release - the 1.12 release does the same thing.  If you double-click on a capture file, it should open that file and show you the three capture panes.


  instead of the native UI... 


The splash screen (which is what your screenshot shows) and the three-pane list are both part of the UI, whether it's in the 1.12 release (which, on OS X, uses X11) or the 2.0 release (which, on OS X, uses Qt directly atop Quartz with no X11 - this is not a "native" vs. X11 issue).


  I think when I open this app, it should has different UI...


That's not what it was written to do - not on OS X, not on Windows, and not on {Linux, Solaris, *BSD, HP-UX, AIX, etc.} with X11 (or Wayland or Mir).  If you open it directly, it shows the splash screen, just like the screen you saw; if you open it by double-clicking on a file, it'll open the file and show you the three panes.