A legacy super class for my FXML controller already includes a protected initialize() method. The controller does not implement the Initializable interface. Consequently, FXMLLoader tries to call the no-args initialize() method and fails with IllegalAccessException:

Caused by: javafx.fxml.LoadException: java.lang.IllegalAccessException: Class javafx.fxml.FXMLLoader can not access a member of class mint.panel.MintContextPanel with modifiers "protected"
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2184)
at mint.javafx.MintFXUtils.loadWithController(MintFXUtils.java:86)
... 8 more
Caused by: java.lang.IllegalAccessException: Class javafx.fxml.FXMLLoader can not access a member of class mint.panel.MintContextPanel with modifiers "protected"
at sun.reflect.Reflection.ensureMemberAccess(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2182)
... 9 more