Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: A bound value cannot be set.
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:157)
at javafx.beans.property.BooleanProperty.setValue(BooleanProperty.java:81)
Steps to reproduce
1. Expand ROOT item.
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:157)
at javafx.beans.property.BooleanProperty.setValue(BooleanProperty.java:81)
Steps to reproduce
1. Expand ROOT item.