The spec on the method java.beans.VetoableChangeSupport.fireVetoableChange states:
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public void fireVetoableChange(String propertyName,
                               Object oldValue,
                               Object newValue)
                        throws PropertyVetoException

Report a vetoable property update to any registered listeners. If anyone vetos the change, then fire a new event reverting everyone to the old value and then rethrow the PropertyVetoException.
===

The fireVetoableChange no longer fires a new event to all listeners, if a listener vetos the change under OpenJDK 6 b01. This contradicts the current Java SE 6 API spec.

Note: VetoableChangeSupport contains 4 overloaded methods fireVetoableChangeXXX with the similar behavior.

The bug is probably caused by the fix for 5004188 "Refactor listener management in [Property|Vetoable]ChangeSupport.java"