When one or more Superceder links are listed below the 
Superceder input, the Nosy List title remains in-place but the Nosy 
List input floats down to remain centred in the table 
cell.

Consistent across IE6, Opera 6.4.

Have fixed 
locally by tweaking style.css to provide the same vertical 
alignment on the td as the th:

table.form td {
  color: 
#333333;
  empty-cells: show;
  /* JK addition: vertical 
alignment consistent with th */
  vertical-align: top;
  /* end JK 
addition */
}