Splashscreen Icon not showing entirely

I use the new splashscreen api to add an evenly splashscreen to all android versions down to API Level 23. Are there any requirements for the splash icon? Currently i try to use a svg and i thought it would be sized automatically on different screens. Does anyone experienced this aswell and has a workaround or knows those (hidden?) requirements?

I use the latest splashscreen api version (1.0.0-alpha02) and this is my theme:

    <style name="SplashTheme" parent="Theme.SplashScreen">
        <item name="windowSplashScreenBackground">@color/colorPrimary</item>
        <item name="windowSplashScreenAnimatedIcon">@drawable/ic_disney_wordmark</item>
        <item name="postSplashScreenTheme">@style/AppTheme</item>
        <item name="windowSplashScreenAnimationDuration">1000</item>
    </style> 

This is the ouput with the ic_disney_wordmark as example which is an svg:

Thanks for your help!

You must now size your icon layers using the following guidelines:

• Both layers must be sized at 108 x 108 dp.
• The inner 72 x 72 dp of the icon appears within the masked viewport.
• The system reserves the outer 18 dp on each of the 4 sides to create interesting visual effects, such as parallax or pulsing.

Note:

• As with adaptive icons, one-third of the foreground is masked (3).
• The app icon (1) should be a vector drawable, and it can be static or animated.

Source : Android Apaptive Icons , Android Splash Screen