When there is a hidden <tfoot> element in the table, the Delete Row command in the editor context menu cannot delete the last row in IE. Works with other rows and other browsers.

WORKAROUND: use visibility: collapse for the footer rows instead of dispay:none for the footer

Repro steps:
- Use the markup attached below
- right click the last row in any table
- choose Row > Delete Row 

Expected: row is always deleted

Actual: in IE you cannot delete the last row of the second table