FloatingActionButton overlaps bottomsheet

[alouanemed]

When showing the bottom layout, it overlaps the fab in a collapsing toolbar layout

Code

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    >

  <android.support.design.widget.AppBarLayout
      android:id="@+id/app__product_list_appbar"
      android:layout_width="match_parent"
      android:layout_height="@dimen/ho__app_bar_height"
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
      style="@style/AppTheme.PopupOverlay"
      >

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/app__product_list_collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        app:contentScrim="?attr/colorPrimary"
        app:expandedTitleMarginStart="@dimen/ho__space_medium_large"
        app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
        app:toolbarId="@+id/toolbar"
        >

      <ImageView
          android:id="@+id/app__product_list_header"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:background="@drawable/ho_home_hero"
          android:scaleType="centerCrop"
          app:layout_collapseMode="parallax"
          tools:ignore="ContentDescription"
          />

      <View
          android:layout_width="match_parent"
          android:layout_height="160dp"
          android:layout_gravity="bottom"
          android:background="@drawable/shape_bg_scrim"
          />

      <android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          android:fitsSystemWindows="true"
          app:layout_collapseMode="pin"
          app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
          />

    </android.support.design.widget.CollapsingToolbarLayout>

  </android.support.design.widget.AppBarLayout>

  <android.support.v4.widget.SwipeRefreshLayout
      android:id="@+id/app__product_list_srl"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:clipToPadding="false"
      app:layout_behavior="@string/appbar_scrolling_view_behavior"
      >

    <com.cooltechworks.views.shimmer.ShimmerRecyclerView
        android:id="@+id/app__product_list_rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_gravity="center_horizontal"
        android:animateLayoutChanges="false"
        android:gravity="center"
        android:scrollbars="vertical"
        app:demo_child_count="10"
        app:demo_layout="@layout/view_product_h_shimmer"
        app:demo_layout_manager_type="grid"
        />

  </android.support.v4.widget.SwipeRefreshLayout>


  <com.flipboard.bottomsheet.BottomSheetLayout
      android:id="@+id/ho__bottom_sheet_share_l"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      >

    <LinearLayout
        android:id="@+id/root"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        >

      <View
          android:id="@+id/view1"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          />

    </LinearLayout>

  </com.flipboard.bottomsheet.BottomSheetLayout>
  <android.support.design.widget.FloatingActionButton
      android:id="@+id/app__product_list_fab"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_margin="@dimen/fab_margin"
      app:srcCompat="@drawable/ic_share"
      app:backgroundTint="@color/colorPrimary"
      app:fabSize="normal"
      app:layout_anchor="@+id/app__product_list_appbar"
      app:layout_anchorGravity="bottom|right|end"
      />

</android.support.design.widget.CoordinatorLayout>