Yeah, as you mentioned there are a couple of differences in such an ordinary shot. The windowpane placement is slightly different, there's glare/reflection in the windows, and that "shadow" looks to be a part of the window-frame, and is gone for whatever reason in the bluray.
Also, this is one shot where the difference in quality between the HDTV and the bluray are quite obvious, in most other shots this is not so much the case.