Data Merge acting funny on portrait tabloid layout?

Just this weekend, I finally upgraded from CS5 to CC (yay?). I was trying to work as seamlessly as I could, but ran into a data merge problem. In order to remove as many variables as I can, I started a new document with defaults for a portrait tabloid document. I create a text field of, say 1.5″x3″ (size doesn’t matter). On the Data Merge pallette, I load a csv file with some data, put the field into the text box, and run the data merge. Without changing any parameters, select multiple records and preview the multiple record document. What happens to me is that the text field is moved to be 3″ below where it should be (top margin is .5, text box is at y=3.5). All else operates as expected. I can reproduce this without fail. Now, if I do the exact same thing with a letter sized document or a tabloid in landscape, all is well and the text boxes are where they should be.

I went back to CS5 and could not reproduce this problem. Another curious thing is that if I start in CC with an existing template created in CS5 that I know worked, it works as expected.

Okay, update — I restarted CC with Ctrl-Alt-Shft to reset the preferences and it seems to be working out of the box. Any ideas as to what preference might cause this kind of behavior?

Jake