Bug: Missing right side of graph frame in Prism 6

A graph will have a three sided frame without a right side, under these conditions:

• Using Prism 6.00, 6.01, 6.0a or 6.0b.
• The graph is a grouped with interleaved data sets.
• The data table has only one row.
• The number format for the X axis is set to "row numbers". Since there is only one row, this makes no sense really.

There are three alternative workarounds to this problem:

• Change the X axis numbering to column titles, instead of row numbers. Since each bar represents a different column, this is the only choice that makes sense when the data are all on one row. 
• Choose a plain frame, where you don't expect a top or right side to the frame.
• Double-click on an axis to bring up Format Axis. Go to the right axis tab, turn on a right axis, and set it to have no numbering.