Grid scrollbars don't appear when inserted into a sizer- updated

wxPython Users
1

As a last ditch try, I had also tried changing the row labels, but
with the same affect.
This is why the call to SetRowLabelValue appears below, instead of
SetColLabelValue

   def _SetColumnHeaders(self):
      self._Grid.SetColLabelValue(0, 'Filename')
      for col in range(1, 14):
         self._Grid.SetRowLabelValue(col, 'STEP %lu' % col)

but the labels in the column headers does not change.

Is it normal for some functionality (other than positioning of the
grid) of a grid to change somewhat after being inserted into a sizer?