fix The last item falls under FloatingActionButton and does not scroll completely - kotlin

Question

thank you for helping me solve this problem
I created the following BottomNavigationView code but my problem is that the last item in the middle of FloatingActionButton falls and the scrolling is not complete
xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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:background="#color/Athens_Gray"
tools:context=".ui.MainActivity">
<com.google.android.material.bottomappbar.BottomAppBar
android:id="#+id/bottombar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:fabAlignmentMode="center"
app:fabAnimationMode="scale"
app:fabCradleMargin="#dimen/_10sdp"
app:fabCradleRoundedCornerRadius="#dimen/_20sdp"
android:background="#android:color/transparent">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottomNavigation"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="#dimen/_16sdp"
android:layout_marginRight="#dimen/_16sdp"
android:background="#android:color/transparent"
app:labelVisibilityMode="unlabeled"
app:menu="#menu/bottom_nav" />
</com.google.android.material.bottomappbar.BottomAppBar>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:contentDescription="TODO"
android:src="#drawable/ic_add_square_outline"
app:backgroundTint="#color/Deluge"
app:layout_anchor="#id/bottomNavigation"
app:tint="#color/white" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.fragment.app.FragmentContainerView
android:id="#+id/nav_host_fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="#navigation/nav_graph"
android:paddingBottom="#dimen/_60sdp"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
According to the screenshot below
screenshot