Windows/wx: Tabular editor redraw failure after row deletion

1. Edit Tabular_editor_demo.py, line 96 to:
operations = [ 'move', 'delete' ],
2. Run on wx in Windows 7.
3. Select the first row and press DEL key.
4. Note that the table rows have not changed.
5. As you move the cursor down, row by row, the rows at and above the cursor are correct, but those below are not (unless you redraw the window).

Not present in Linux (punchagan), or OSX, now with QT in Windows.