Signal-Android/app/src/main/res/layout/main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">

    <androidx.fragment.app.FragmentContainerView
        android:name="org.thoughtcrime.securesms.main.MainActivityListHostFragment"
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        tools:context=".MainActivity" />

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/conversation_list_tabs"
        android:name="org.thoughtcrime.securesms.stories.tabs.ConversationListTabsFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>