Android Studio: How to prevent up button in toolbar from pushing child view to the right?

So I have a toolbar and it is the parent of a vertical linear layout containing two text views. When I run the activity without the up button everything looks fine. However, when I add the up button it appears to push the linear layout to the right. It seems like there's an implicit horizontal linear layout containing the up button and my own vertical linear layout.

If I cannot prevent the up button from doing this is there a way to set up the up button instead of doing it programmatically?

Sidenote: The reason I'm not using the ActionBar.SetTitle/SetSubtitle functions is because I can't style them how I want. However these functions don't have the same issue with the spacing.

Here's my activity code in my onCreate method. I've also added the relevant import statements:

import android.support.v7.app.ActionBar;
import android.support.v7.widget.Toolbar;

//Get tool bar
        Toolbar toolbar = (Toolbar) findViewById(R.id.thickToolBar);
        setSupportActionBar(toolbar);
        final ActionBar supportActionBar = getSupportActionBar();
        supportActionBar.hide();
        supportActionBar.setDisplayHomeAsUpEnabled(true); //If I comment out this line, things display normally. But ofc no up button
        final TextView actionBarTitle = (TextView) findViewById(R.id.toolbar_title);
        final TextView actionBarSubtitle = (TextView) findViewById(R.id.toolbar_subtitle);
        supportActionBar.setDisplayShowTitleEnabled(false);
        actionBarSubtitle.setText(query);

Here's my xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    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:layout_margin="0dp"
    android:orientation="vertical"
    android:padding="0dp"
    tools:context="com.kreyoldict.kreyoldict.DefinitionActivity">

    <RelativeLayout
        android:id="@+id/progressBarContainer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone">

        <ProgressBar
            android:id="@+id/progressBarDefinitionActivity"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:visibility="visible"/>

    </RelativeLayout>


    <android.support.v7.widget.Toolbar
        android:id="@+id/thickToolBar"
        android:layout_width="match_parent"
        android:layout_height="250dp"
        android:layout_margin="0dp"
        android:background="?attr/colorPrimary"
        android:elevation="4dp"
        android:padding="0dp"
        android:textAlignment="center"
        android:theme="@style/AppActionBar"
        android:visibility="visible"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
        app:contentInsetLeft="0dp"
        app:contentInsetStart="0dp"
        app:contentInsetStartWithNavigation="0dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_margin="0dp"
            android:layout_marginRight="0dp"
            android:orientation="vertical"
            android:padding="0dp">

            <TextView
                android:id="@+id/toolbar_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="Translated Word"
                android:textAlignment="center"
                android:textAppearance="@style/TextAppearance.AppCompat.Display2"
                android:textColor="@android:color/white"/>

            <TextView
                android:id="@+id/toolbar_subtitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="Original Text"
                android:textAlignment="center"
                android:textAppearance="@style/TextAppearance.AppCompat.Display1"
                android:textColor="@android:color/white"/>
        </LinearLayout>

    </android.support.v7.widget.Toolbar>

    <ScrollView
        android:id="@+id/scrollViewDefinitionActivity"
        android:layout_width="match_parent"
        android:layout_height="402dp"
        >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <TextView
                android:id="@+id/textViewWordDefinition"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:padding="20dp"
                android:text="@string/tv_detail_activity_word_definition"
                android:textAppearance="@style/TextAppearance.AppCompat.Body1"/>

        </LinearLayout>


    </ScrollView>

</LinearLayout>

Here's a picture of my [component tree][1] never mind, I need more rep to post 3+ links.

Here's a pic of the app with the up button and layout bounds: up button shenanigans

It's kinda hard to see because my toolbar is red, but it seems like the linear layout begins where the up button ends.

Here's a picture with no up button and layout bounds