Window Title problem in iOS7

Hi Everyone, I am facing some weird problems on iOS7. There are basically two problems that I am facing with windowtitle:

• First is window title is flickering when window opens.
• 2nd, Window title is misplaced it moves right automatically, sometimes it does and sometimes it don't.

  // I am giving the title with "titleControl" property
   
  win.titleControl = he.create("Label", "TitleLabel", {
      text: "Title",
      color: "white"
  })

  Thanks for any help.