Android Window BackgroundImage Not Appearing

I realize this tends to come up a fair amount but I cannot get a backgroundImage to appear on a Window element to save my life.

index.tss

"#index": {
    backgroundImage:'/someBackground.png'
}

index.xml

<Alloy>
    <Window id="index">
    </Window>
</Alloy>

index.js

$.index.open();

As a work around I can make it work by adding an ImageView in a composite layout, but that is a pretty lame workaround. At least it demonstrates the image is accessible on the device.

• SDK 3.4.0.GA
• CLI 3.4.0
• Alloy 1.5.1
• Android 4.4.2(19)
• ti.android.fastdev = false