Bug 33085 [Preferences] Last page not remembered the second time
RC1 build - Window / Preferences - select the Appearance page - OK - Window / Preferences - Appearance page is still selected - OK - Window / Preferences - Workbench is selected It should always remember the last page, even if the page isn't changed.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
messageLabel.setBackground(errorMsgAreaBackground);
				messageLabel.setImage(errorMsgImage);
				titleImage.setImage(null);
			}
		}
		titleArea.layout(true);
	}
	/**
	 * Sets whether a Help button is available for this dialog.
	 * <p>
	 * Clients must call this framework method before the dialog's control
	 * has been created.
	 * <p>
	 *
	 * @param b <code>true</code> to include a Help button, 
	 *  and <code>false</code> to not include one (the default)
	 */
	public void setHelpAvailable(boolean b) {
		isHelpAvailable = b;
	}
	/**
	 * Set the message text. If the message line currently displays an error,
	 * the message is stored and will be shown after a call to clearErrorMessage
	 * <p>
	 * Shortcut for <code>setMessage(newMessage, NONE)</code>
	 * </p> 
	 * 
	 * @param newMessage the message, or <code>null</code> to clear
	 *   the message
	 */