Yes the rectangle was originally at Is the rectangle at position (0,0). I tried to change the location to (0.5, 0.5) and had the same problem. Thus I put the position back to (0,0).

Also:

When I set the border of the rectangle to solid, I can see the rectangle when the SSRS report is executing. The rectangle appears before any of the matrixes are displayed. However when I look at the rectangle in design mode, the rectangle is around all 6 of the matrixes.

Thus could you tell me why the rectangle is displayed in a different location when the report is executing and not around all the matrixes at that point?