remove nonworking animation from widget

template/qtgui/helper.py

@@ -329,12 +329,16 @@ class ToggleSwitch(QtWidgets.QAbstractButton):
 
     def mouseReleaseEvent(self, event):  # pylint: disable=invalid-name
         super().mouseReleaseEvent(event)
+
+        """
+        broken since Qt5.15
         if event.button() == QtCore.Qt.LeftButton:
             anim = QtCore.QPropertyAnimation(self, b'offset', self)
             anim.setDuration(120)
             anim.setStartValue(self.offset)
             anim.setEndValue(self._end_offset[self.isChecked()]())
             anim.start()
+        """
 
     def enterEvent(self, event):  # pylint: disable=invalid-name
         self.setCursor(QtCore.Qt.PointingHandCursor)