merlin b49, b50: ar/en, solaris8/solarisIA8

when start to run jRadioButtonMenuItem.java (attached), after the menu is pulled
down and selected, the menu won't disappear. Exceptions are thrown.

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/usr/local/java/jdk1.4/solx86/bin/appletviewer jRadioButtonMenuItem.html
java.lang.NullPointerException
        at javax.swing.text.FlowView.calculateMinorAxisRequirements(FlowView.java:208
        at javax.swing.text.BoxView.checkRequests(BoxView.java:908)
        at javax.swing.text.BoxView.getMinimumSpan(BoxView.java:539)
        at javax.swing.text.BoxView.calculateMinorAxisRequirements(BoxView.java:876)
        at javax.swing.text.BoxView.checkRequests(BoxView.java:908)
        at javax.swing.text.BoxView.setSpanOnAxis(BoxView.java:321)
        at javax.swing.text.BoxView.layout(BoxView.java:679)
        at javax.swing.text.BoxView.setSize(BoxView.java:375)
        at javax.swing.plaf.basic.BasicTextUI$RootView.setSize(BasicTextUI.java:1513)
        at javax.swing.plaf.basic.BasicTextUI.viewToModel(BasicTextUI.java:903)
        at javax.swing.text.DefaultCaret.positionCaret(DefaultCaret.java:214)
        at javax.swing.text.DefaultCaret.adjustCaretAndFocus(DefaultCaret.java:327)
        at javax.swing.text.DefaultCaret.mouseClicked(DefaultCaret.java:287)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:211)
        at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:210)
        at java.awt.Component.processMouseEvent(Component.java:4865)
        at java.awt.Component.processEvent(Component.java:4688)
        at java.awt.Container.processEvent(Container.java:1299)
        at java.awt.Component.dispatchEventImpl(Component.java:3460)
        at java.awt.Container.dispatchEventImpl(Container.java:1361)
        at java.awt.Component.dispatchEvent(Component.java:3327)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3175)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2899)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2845)
        at java.awt.Container.dispatchEventImpl(Container.java:1335)
        at java.awt.Window.dispatchEventImpl(Window.java:1338)
        at java.awt.Component.dispatchEvent(Component.java:3327)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:437)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:140)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:126)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:121)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)