Spark BitmapImage doesnt support loading bits from a ByteArray object

Found in 4.5.0.16298.

Steps to reproduce:
1. Compile and run attached MXML file.
2. Click the button to load a ByteArray into an mx:Image and s:Image instance.

Actual Results:
mx:Image displays the ByteArray content.
s:Image doesn't.

Expected Results:
s:BitmapImage and s:Image should support loading ByteArray objects.
This is supported by mx:Image, and flash.display.Loader (and Flash Professional's fl.containers.UILoader).

Workaround (if any):
use mx:Image instead of s:Image.