title: fitsSystemWindows is not working with support libraries 27.1.1
body: <p>I was using Android Support Library version 27.0.2. With that version I had this configuration:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:fitsSystemWindows="true"
  tools:context="...Activity"&gt;
  
  &lt;android.support.design.widget.AppBarLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:theme="@style/ToolbarThemeBlack"&gt;
  
      &lt;android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          android:background="?attr/colorPrimary" /&gt;
  
  &lt;/android.support.design.widget.AppBarLayout&gt;
  
  &lt;include layout="@layout/content_..." /&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>on v21 styles:</p>
  
  <pre><code>&lt;style name="AppTheme.NoActionBar"&gt;
      &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
      &lt;item name="windowNoTitle"&gt;true&lt;/item&gt;
      &lt;item name="android:windowDrawsSystemBarBackgrounds"&gt;true&lt;/item&gt;
      &lt;item name="android:statusBarColor"&gt;@android:color/transparent&lt;/item&gt;
  
      &lt;item name="android:windowActivityTransitions"&gt;true&lt;/item&gt;
      &lt;item name="android:windowContentTransitions"&gt;true&lt;/item&gt;
      &lt;item name="android:windowAllowEnterTransitionOverlap"&gt;true&lt;/item&gt;
      &lt;item name="android:windowAllowReturnTransitionOverlap"&gt;true&lt;/item&gt;
      &lt;item name="android:windowSharedElementEnterTransition"&gt;@android:transition/move&lt;/item&gt;
      &lt;item name="android:windowSharedElementExitTransition"&gt;@android:transition/move&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>on default theme:</p>
  
  <pre><code>&lt;style name="AppTheme.NoActionBar"&gt;
      &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
      &lt;item name="windowNoTitle"&gt;true&lt;/item&gt;
      &lt;item name="android:textColorPrimary"&gt;@color/textColorPrimary&lt;/item&gt;
      &lt;item name="android:textColorSecondary"&gt;@android:color/darker_gray&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>With that configuration everything worked as expected. The toolbar color was the desired, the only way it shows up is adding android:fitsSystemWindows="true". Today I updated the Android Support Library to 27.1.1, and now the toolbar color is white, it looks like fitsSystemWindows stops working.</p>
  
  <p>Here you can see what I mean. </p>
  
  <p><a href="https://i.stack.imgur.com/lAV1k.png" rel="nofollow noreferrer">toolbar color changes before and after update</a>
  What am I doing wrong?</p>