QCompleter activated signal doesn't respond to mouse clicks.

from PySide import QtGui, QtCore

class TestLE( QtGui.QLineEdit  ):

	def __init__( self, parent = None ):
		QtGui.QLineEdit.__init__( self, parent = parent )
		self._completer = QtGui.QCompleter()
		self._completer.setModel( self.__getModel() )
		
		# This line will cause the signal to be disconnected after the completer is clicked on with the mouse,
		# but not if a completion is navigated to with the arrow keys and enter pressed.
		self._completer.activated[QtCore.QModelIndex].connect( self.test )
						
		# This is connecting the same signal, but via a lambda wrapper function. This will work correctly for
		# mouse clicks and keyboard enter presses.
		# self._completer.activated[QtCore.QModelIndex].connect( lambda index : self.test(index) )
		
		self.setCompleter( self._completer )
	
	def __getModel( self ):
		m = QtGui.QStandardItemModel( parent = self )
		i = QtGui.QStandardItem( 'test' )
		m.appendRow( i )
		i2 = QtGui.QStandardItem( 'test2' )
		m.appendRow( i2 )
		return m
		
	def test( self, index ):
		print 'index', index
		

if __name__ == '__main__':
	app = QtGui.QApplication([])
	
	tle = TestLE()
	tle.show()
	
	app.exec_()