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Steps: 1) Open prop sheet 2) Click and try to drag this small thin column header of property table 3) IAE is thrown java.lang.IllegalArgumentException: Reordering not supported at org.openide.explorer.propertysheet.SheetColumnModel.moveColumn(SheetColumnModel.java:135) at javax.swing.plaf.basic.BasicTableHeaderUI$MouseInputHandler.setDraggedDistance(BasicTableHeaderUI.java:216) at javax.swing.plaf.basic.BasicTableHeaderUI$MouseInputHandler.mouseDragged(BasicTableHeaderUI.java:195) at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:261) at java.awt.Component.processMouseMotionEvent(Component.java:5148) at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:2779) at java.awt.Component.processEvent(Component.java:4901) at java.awt.Container.processEvent(Container.java:1569) at java.awt.Component.dispatchEventImpl(Component.java:3615) at java.awt.Container.dispatchEventImpl(Container.java:1627) at java.awt.Component.dispatchEvent(Component.java:3477) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3215) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128) at java.awt.Container.dispatchEventImpl(Container.java:1613) at java.awt.Window.dispatchEventImpl(Window.java:1606) at java.awt.Component.dispatchEvent(Component.java:3477) [catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:456) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137) at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
Known and already fixed on the property panel rewrite branch - the headers will be hidden. Metal had me fooled because it didn't show any if a header title wasn't specified, but GTK & Windows classic do.
*** This issue has been marked as a duplicate of 36708 ***
verified duplicate, by the way it's already fixed in incoming NB3.6