tachiyomi/app/src/main/res/layout/action_toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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/action_toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:clipToPadding="false"
    android:padding="8dp"
    android:visibility="gone"
    tools:visibility="visible">

    <com.google.android.material.card.MaterialCardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:cardCornerRadius="@dimen/dialog_radius">

        <com.google.android.material.appbar.MaterialToolbar
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:layout_gravity="bottom"
            app:contentInsetEnd="8dp"
            app:contentInsetStart="8dp">

            <androidx.appcompat.widget.ActionMenuView
                android:id="@+id/menu"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />

        </com.google.android.material.appbar.MaterialToolbar>

    </com.google.android.material.card.MaterialCardView>

</FrameLayout>