Newly added test for fix JDK-6286501 is failing in macos citing

java.lang.NullPointerException: Cannot invoke "javax.swing.JTabbedPane.getSelectedIndex()" because "this.this$0.tabPane" is null
at java.desktop/com.apple.laf.AquaTabbedPaneUI$2.stateChanged(AquaTabbedPaneUI.java:813)
at java.desktop/javax.swing.JTabbedPane.fireStateChanged(JTabbedPane.java:446)
at java.desktop/javax.swing.JTabbedPane$ModelListener.stateChanged(JTabbedPane.java:297)
at java.desktop/javax.swing.DefaultSingleSelectionModel.fireStateChanged(DefaultSingleSelectionModel.java:148)
at java.desktop/javax.swing.DefaultSingleSelectionModel.setSelectedIndex(DefaultSingleSelectionModel.java:79)
at java.desktop/javax.swing.JTabbedPane.setSelectedIndexImpl(JTabbedPane.java:650)
at java.desktop/javax.swing.JTabbedPane.setSelectedIndex(JTabbedPane.java:625)
at TestNPEStateChgListener.lambda$main$0(TestNPEStateChgListener.java:66)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:308)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)