Err, Egg, are you talking about the attached pic? If so, then it may just be you. The shadow option is off by default and no amount of resizing makes it appear unless I tick the box. De-selecting makes it go away, and it stays off.

XWDP 17.1 and also tested on a friends XDP+ whatever number it's up to.

Click image for larger version.  Name: Shadow.jpg  Views: 85  Size: 6.7 KB  ID: 129861