java.lang.ArrayIndexOutOfBoundsException: 2
   at javax.swing.plaf.basic.BasicTabbedPaneUI$ScrollableTabSupport.setLeadingTabIndex(BasicTabbedPaneUI.java:3321)
   at javax.swing.plaf.basic.BasicTabbedPaneUI$ScrollableTabSupport.scrollBackward(BasicTabbedPaneUI.java:3310)
   at javax.swing.plaf.basic.BasicTabbedPaneUI$Actions.actionPerformed(BasicTabbedPaneUI.java:2261)
   at org.netbeans.core.windows.view.ui.CloseButtonTabbedPane.scrollTabsLeft(CloseButtonTabbedPane.java:218)
   at org.netbeans.core.windows.view.ui.CloseButtonTabbedPane.access$200(CloseButtonTabbedPane.java:77)
   at org.netbeans.core.windows.view.ui.CloseButtonTabbedPane$2.mouseWheelMoved(CloseButtonTabbedPane.java:131)
   at java.awt.Component.processMouseWheelEvent(Component.java:6604)
   at java.awt.Component.processEvent(Component.java:6288)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4872)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4521)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:740)
   at java.awt.EventQueue.access$300(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:699)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:713)
   at java.awt.EventQueue$4.run(EventQueue.java:711)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:710)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)