Bug 93245 [Dialogs] Error messages show up in two locations in the properties dialog
Force an error message: 1) select a Java project 2) open the properties dialog 3) navigate to Java Compiler>Building 4) enable project specific settings 5) enter a letter into the maximum number of problems field ->the error message shows up at the bottom 6) resize the dialog ->the error message also shows up in the banner
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
private Label messageImageLabel;
		private Composite messageComposite;
		private String lastMessageText = "";
		private int lastMessageType;
		/**
		 * Create a new instance of the receiver.
		 */
		public MessageRegion() {
			
		}
		/**
		 * Create the contents for the receiver.
		 * 
		 * @param parent
		 *            the Composite that the children will be created in
		 */
		public void createContents(Composite parent) {
			messageComposite = new Composite(parent, SWT.NONE);
			GridLayout messageLayout = new GridLayout();
			messageLayout.numColumns = 2;
			messageLayout.marginWidth = 0;
			messageLayout.marginHeight = 0;
			messageLayout.makeColumnsEqualWidth = false;
			messageComposite.setLayout(messageLayout);
			messageImageLabel = new Label(messageComposite, SWT.NONE);
			GridData imageData = new GridData(GridData.VERTICAL_ALIGN_CENTER);
			Image sizingImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
			Rectangle imageBounds;
			if(sizingImage == null)
				imageBounds = new Rectangle(0,0,IDialogConstants.VERTICAL_MARGIN * 2,IDialogConstants.VERTICAL_MARGIN * 2);