Bug 90528 Editor icon does not show problem decoration for second instance
3.1 M6 - open a .java file that has errors or warnings - the editor tab icon has the problem decoration - Window > New Window - open the same file in the new window - the editor tab icon is missing the problem decoration
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
fJavaEditorErrorTickUpdater= new JavaEditorErrorTickUpdater(this);
	}
	
	/*
	 * @see AbstractTextEditor#createActions()
	 */
	protected void createActions() {
		
		super.createActions();
		Action action= new TextOperationAction(JavaEditorMessages.getResourceBundle(), "CorrectionAssistProposal.", this, CORRECTIONASSIST_PROPOSALS); 
		action.setActionDefinitionId(IJavaEditorActionDefinitionIds.CORRECTION_ASSIST_PROPOSALS);		
		setAction("CorrectionAssistProposal", action); 
		markAsStateDependentAction("CorrectionAssistProposal", true); 
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.QUICK_FIX_ACTION);
		action= new ContentAssistAction(JavaEditorMessages.getResourceBundle(), "ContentAssistProposal.", this); 
		action.setActionDefinitionId(ITextEditorActionDefinitionIds.CONTENT_ASSIST_PROPOSALS);		
		setAction("ContentAssistProposal", action); 
		markAsStateDependentAction("ContentAssistProposal", true); 
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.CONTENT_ASSIST_ACTION);
		action= new TextOperationAction(JavaEditorMessages.getResourceBundle(), "ContentAssistContextInformation.", this, ISourceViewer.CONTENTASSIST_CONTEXT_INFORMATION);	
		action.setActionDefinitionId(ITextEditorActionDefinitionIds.CONTENT_ASSIST_CONTEXT_INFORMATION);		
		setAction("ContentAssistContextInformation", action); 
		markAsStateDependentAction("ContentAssistContextInformation", true); 
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.PARAMETER_HINTS_ACTION);
		action= new TextOperationAction(JavaEditorMessages.getResourceBundle(), "Comment.", this, ITextOperationTarget.PREFIX); 
		action.setActionDefinitionId(IJavaEditorActionDefinitionIds.COMMENT);		
		setAction("Comment", action); 
		markAsStateDependentAction("Comment", true); 
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.COMMENT_ACTION);