title: Hidden Floating Action Button popping up in CoordinatorLayout
body: <p>I have an <code>Activity</code> with a <code>ViewPager</code>, which displays three different Fragments. Everything is inside a <code>CoordinatorLayout</code>.
  What I basically did is the same as in this answer: <a href="https://stackoverflow.com/questions/31596640/fab-animation-with-viewpager-tabslider/31663686#31663686">FAB animation with viewpager/tabslider</a></p>
  
  <p>I don't want to have the FAB in the first <code>Fragment</code>, so I set the FAB's visibility to <code>GONE</code> in the layout and show/hide it only when the 2nd <code>Fragment</code> is selected. This part actually works fine.</p>
  
  <p>However, when the <code>Activity</code> is first created(or the screen is rotated) the FAB pops up on the first <code>Fragment</code> for a quick moment, which is really annoying.
  When I replace the <code>CoordinatorLayout</code> with something else, the FAB stays hidden when it should.</p>
  
  <p>I'm using the design support library 23.0.1. The cheesesquare sample is having the same issue, when the FAB is set to be gone.</p>
  
  <p>Can someone suggest a workaround for this? I couldn't find the sources for the <code>CoordinatorLayout</code>, so I couldn't look for a reason why this happens.</p>