Shy behaviour is not working

[swetaranipanda]

<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:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="13dp"
tools:context=".fragment.WorkspaceActivity">

<FrameLayout
    android:id="@+id/frame_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_above="@+id/navigation"
    android:animateLayoutChanges="true"

    >

</FrameLayout>



    <com.roughike.bottombar.BottomBar
        android:id="@+id/navigation"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:layout_gravity="bottom"
        app:bb_behavior="shy"
        app:bb_tabXmlResource="@xml/bottombar_tabs"
        app:bb_tabletMode="false" />

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

This is xml layout.Bottiomtans are not hiding while i scroll listview.