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
* 
	 * @param listener	The reconcile listener to be added
	 * @since 3.0
	 */
	final void addReconcileListener(IJavaReconcilingListener listener) {
		synchronized (fReconcilingListeners) {
			fReconcilingListeners.add(listener);
		}
	}
	
	/**
	 * Removes the given listener.
	 * Has no effect if an identical listener was not already registered.
	 * 
	 * @param listener	the reconcile listener to be removed
	 * @since 3.0
	 */
	final void removeReconcileListener(IJavaReconcilingListener listener) {
		synchronized (fReconcilingListeners) {
			fReconcilingListeners.remove(listener);
		}
	}
		
	protected void updateStateDependentActions() {
		super.updateStateDependentActions();
		fGenerateActionGroup.editorStateChanged();
	}
	
	/*
	 * @see AbstractTextEditor#rememberSelection()