text alignment lost from QAbstractItemModel.data overrides

Consider the following code snip in which we right align the data in column 1
of a model:

class Model(QtCore.QAbstractItemModel):
...
def data(self, index, role):
...
if role == QtCore.Qt.TextAlignmentRole and index.column()==1:
return QtCore.Qt.AlignRight | QtCore.Qt.AlignVCenter
...

The text is instead of being right aligned is rendered in the upper left hand
corner of the view cell.

For context, there is a full example attached including the snip above.

Note that the second column (column 1) is rendered correctly in version 1.0.9,
but not in 1.1.0.