Excel rendering does not honor the expand "right to left" option of the matrix. In the browser, this will cause labels to be on the left side instead of the right. (I need this because the matrix control doesn't support labels on both sides, and doesn't allow custom widths for subtotal columns - I have two matrices side-by-side to get this effect).

To reproduce, create a report, add a matrix, set expand "right to left", view in excel.