Photo box anomaly?

I was reworking a book and suddenly the image didn't fill the photo box in the same way it did a few weeks ago ~ Nov 15th 2011.

I experimented a bit and found the following

Given an image that does fill the box, with the box alignment set to "scale to fill" it fills it up until a certain point, afer which increasing the box size vertically causes it to be jammed into the lower left.

Here it's OK

Here I've expanded the box vertically, just a little bit:

Admittedly the image is horizontal and I'm jamming it into a portrait box, but still.

Has anyone else seen this? my solution is to reduce the vertical dimension until it fills appropriately.