I don't know whether it is a bug or not. In "Array by column", My Version 2.05+ Build 140730 currently puts subquestions horizontally (on top from left to right) while the answers are listed vertically (side from top to bottom). See attached image.

I may be wrong. In my opinion, subquestions stay on the left side, listed from top to bottom, the answer options on top from left to right. There may be a setting that exchanges the axis of subquestions and answers. Can anyone direct me where to change this setting?