Белая полоса макета ограничения Android вверху

Я разрабатываю приложение для Android для проекта, над которым я работаю.

Я реализовал функционал и начал разрабатывать макеты. Я столкнулся с проблемой, которую не могу найти или найти решение в Интернете. Мой макет ограничения имеет белую полосу вверху по неизвестной причине.

Я попытался преобразовать макет в линейный, но полоса все еще там. Я пропустил что-то действительно очевидное или это ошибка?

<?xml version = "1.0" encoding = "utf-8"?>
<android.support.constraint.ConstraintLayout 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 = "@drawable/gradient"
    tools:context = ".Login">
<EditText
    android:id = "@+id/registerEmailField"
    android:layout_width = "371dp"
    android:layout_height = "40dp"
    android:layout_marginTop = "8dp"
    android:layout_marginBottom = "8dp"
    android:background = "@drawable/rounded_white"
    android:ems = "10"
    android:hint = "@string/email"
    android:importantForAutofill = "no"
    android:inputType = "textEmailAddress"
    android:paddingLeft = "10dp"
    android:paddingRight = "10dp"
    app:layout_constraintBottom_toBottomOf = "parent"
    app:layout_constraintEnd_toEndOf = "parent"
    app:layout_constraintStart_toStartOf = "parent"
    app:layout_constraintTop_toTopOf = "parent"
    app:layout_constraintVertical_bias = "0.469"
    tools:targetApi = "o" />

<EditText
    android:id = "@+id/loginPasswordField"
    android:layout_width = "371dp"
    android:layout_height = "43dp"
    android:autofillHints = ""
    android:background = "@drawable/rounded_white"
    android:ems = "10"
    android:hint = "@string/password"
    android:inputType = "textPassword"
    android:paddingLeft = "10dp"
    android:paddingRight = "10dp"
    app:layout_constraintBottom_toBottomOf = "parent"
    app:layout_constraintEnd_toEndOf = "parent"
    app:layout_constraintStart_toStartOf = "parent"
    app:layout_constraintTop_toTopOf = "parent"
    app:layout_constraintVertical_bias = "0.561"
    tools:targetApi = "o" />

<ImageView
    android:id = "@+id/PicShare"
    android:layout_width = "196dp"
    android:layout_height = "67dp"
    android:layout_marginTop = "8dp"
    android:layout_marginBottom = "8dp"
    android:contentDescription = "@string/the_picshare_logo"
    app:layout_constraintBottom_toBottomOf = "parent"
    app:layout_constraintEnd_toEndOf = "parent"
    app:layout_constraintHorizontal_bias = "0.497"
    app:layout_constraintStart_toStartOf = "parent"
    app:layout_constraintTop_toTopOf = "parent"
    app:layout_constraintVertical_bias = "0.348"
    app:srcCompat = "@drawable/pic_share" />

<Button
    android:id = "@+id/loginButton"
    android:layout_width = "371dp"
    android:layout_height = "45dp"
    android:background = "@drawable/rounded_blue"
    android:text = "@string/login"
    android:textColor = "#FFFFFF"
    app:layout_constraintBottom_toBottomOf = "parent"
    app:layout_constraintEnd_toEndOf = "parent"
    app:layout_constraintStart_toStartOf = "parent"
    app:layout_constraintTop_toTopOf = "parent"
    app:layout_constraintVertical_bias = "0.665" />

<Button
    android:id = "@+id/navigate_to_register"
    android:layout_width = "wrap_content"
    android:layout_height = "wrap_content"
    android:background = "@android:color/transparent"
    android:text = "@string/not_registered_sign_up"
    android:textColor = "#FFFFFF"
    app:layout_constraintBottom_toBottomOf = "parent"
    app:layout_constraintEnd_toEndOf = "parent"
    app:layout_constraintHorizontal_bias = "0.497"
    app:layout_constraintStart_toStartOf = "parent"
    app:layout_constraintTop_toTopOf = "parent"
    app:layout_constraintVertical_bias = "0.752" />

<resources>
<!-- Base application theme. -->
<style name = "AppTheme" parent = "Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name = "colorPrimary">@color/colorPrimary</item>
    <item name = "colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name = "colorAccent">@color/colorAccent</item>
</style>

<style name = "NoActionBar" parent = "Theme.AppCompat.Light.NoActionBar">
    <item name = "windowActionBar">false</item>
    <item name = "windowNoTitle">true</item>
    <item name = "android:windowNoTitle">true</item>
    <item name = "android:statusBarColor">@android:color/transparent</item>
</style>