ADDITIONAL SYSTEM INFORMATION :
C:\Users\hwaite>ver

Microsoft Windows [Version 10.0.16299.547]

C:\Users\hwaite>"%JAVA_HOME%"\bin\java -version
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)

A DESCRIPTION OF THE PROBLEM :
TableView.getSelectionModel().getSelectedItems() returns an ObservableList to which ListChangeListeners can be added. When TableView is backed by a SortedList, item mutation may trigger a change in sort order. In this case, the resultant ListChangeListener.Change event will consist of a single 'add' change.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Create ObservableList with an extractor
2. Populate list with sample objects
3. Decorate base list with SortedList
4. Call TableView.setItems(sortedList)
5. Call sortedList.comparatorProperty().bind(tableView.comparatorProperty())
6. Add listener: tableView.getSelectionModel().getSelectedItems().addListener(listChangeListener)
7. Sort table on mutable property
8. Modify table item such that sort order is changed
9. listChangeListener receives invalid events


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expect a list change event with single 'permutation' sub-event.
ACTUAL -
List change event with 'add' sub-event

FREQUENCY : always