When registering a new mandatory field using (in this case) QWizardPage.registerField() the signal name gets cut of.

Example:

A subclassed QWizardPage calling:
self.registerField("nodeName*", self, "selectedNode", "nodeSelectionChanged()")
 
This ends up trying to connect signal "odeSelectionChanged". Resulting in:
QObject::connect: No such signal Wizard_NodeSelection::odeSelectionChanged()
 
Attached is test.py to reproduce the issue in Pyside2 and test_pyqt.py for the same thing(but working) in PyQt5.
 

As a workaround you can put a dummy character in front of the signal name when registering as so:

self.registerField("nodeName*", self, "selectedNode", "ZnodeSelectionChanged()")
 

And everything will work.