Not working on API 21

[BoHellgren]

I am using flutter_native_splash: ^0.1.9 with the following in pubspec.yaml:

flutter_native_splash:
    image: assets/images/splash.png
    color: "42a5f5"
    fill: false

When I run flutter pub run flutter_native_splash:create I get the following android/app/src/main/res/drawable/launch_background.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Modify this file to customize your launch splash screen -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@color/splash_color" />

    <!-- You can insert your own image assets here -->
    <!-- <item>
        <bitmap
            android:gravity="center"
            android:src="@mipmap/launch_image" />
    </item> -->
    <item>
        <bitmap android:gravity="fill" android:src="@drawable/splash" />
    </item>

</layer-list>

But the file android/app/src/main/res/drawable-v21/launch_background.xml is not updated. It looks like this:

<?xml version="1.0" encoding="utf-8"?>
<!-- Modify this file to customize your launch splash screen -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="?android:colorBackground" />

    <!-- You can insert your own image assets here -->
    <!-- <item>
        <bitmap
            android:gravity="center"
            android:src="@mipmap/launch_image" />
    </item> -->
</layer-list>

When I start my app on Android 21, it crashes immediately. If I manually replace the xml file in drawable_v21 with the one in drawable, the app works.

Does flutter_native_splash not support Android 21?