Unable to add a row to a table after merging cells

Summary

After creating a table, and merging cells in all columns except for one, adding a row actually only adds a row to the non-merged column, and not the table itself.

Steps to Reproduce

1. Create a new page
2. Add a 3 x 3 table
3. Merge the 2 cells in the first column and last column leaving the middle column untouched
4. Place the cursor in the first box and select add a row

Expected Results

Expect to be able to add an un-merged (default style) row under the current row

Actual Results

A row is added to the un-merged column (Middle Column) even though the cursor was not placed in the column

Solution / Workaround

Un-merge the cells in the row, create a new row, then select the above cells to be merged. Since the new row was created, new complete rows will continue to be able to be added to the table.