NullPoineterException when call CA

When we call CA for https://svn.jboss.org/repos/jbosstools/branches/jbosstools-3.0.0.Beta1/jsf/tests/org.jboss.tools.jsf.vpe.jsf.test/resources/jsfTest/WebContent/pages/JBIDE/788/testCAPathProposals.xhtml on line 11 position 41 a NullPointerException appears in log.

java.lang.NullPointerException
at org.eclipse.jst.jsp.ui.internal.contentassist.JSPContentAssistProcessor.addAttributeValueProposals(JSPContentAssistProcessor.java:385)
at org.jboss.tools.jst.jsp.contentassist.ExtendedJSPContentAssistProcessor.addAttributeValueProposals(ExtendedJSPContentAssistProcessor.java:666)
at org.eclipse.wst.xml.ui.internal.contentassist.AbstractContentAssistProcessor.computeAttributeValueProposals(AbstractContentAssistProcessor.java:1267)
at org.eclipse.wst.xml.ui.internal.contentassist.AbstractContentAssistProcessor.computeCompletionProposals(AbstractContentAssistProcessor.java:1301)
at org.eclipse.jst.jsp.ui.internal.contentassist.JSPContentAssistProcessor.computeCompletionProposals(JSPContentAssistProcessor.java:1187)
at org.eclipse.wst.xml.ui.internal.contentassist.AbstractContentAssistProcessor.computeCompletionProposals(AbstractContentAssistProcessor.java:1409)
at org.eclipse.jst.jsp.ui.internal.contentassist.JSPContentAssistProcessor.computeCompletionProposals(JSPContentAssistProcessor.java:911)
at org.jboss.tools.jst.jsp.contentassist.ExtendedJSPContentAssistProcessor.computeCompletionProposals(ExtendedJSPContentAssistProcessor.java:99)
at org.jboss.tools.common.text.xml.contentassist.SortingCompoundContentAssistProcessor.computeCompletionProposals(SortingCompoundContentAssistProcessor.java:194)
at org.eclipse.wst.sse.ui.internal.contentassist.CompoundContentAssistProcessor.computeCompletionProposals(CompoundContentAssistProcessor.java:300)
at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1836)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:553)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:550)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:485)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:479)
at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1664)
at org.eclipse.wst.sse.ui.internal.StructuredTextViewer.doOperation(StructuredTextViewer.java:437)
at org.jboss.tools.jst.jsp.jspeditor.JSPTextEditor$JSPStructuredTextViewer.doOperation(JSPTextEditor.java:672)
at org.eclipse.ui.texteditor.TextOperationAction$1.run(TextOperationAction.java:131)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.texteditor.TextOperationAction.run(TextOperationAction.java:129)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185)
at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:471)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:822)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:880)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:569)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:511)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:126)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1436)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1157)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1194)
at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:698)
at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2761)
at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:702)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1543)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4502)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4099)
at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:5783)
at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:1541)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3031)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
at org.eclipse.equinox.launcher.Main.main(Main.java:1212)