message: Set title bar's title once
diff: @@ -13,6 +13,7 @@ const TITLE_BAR_NAMESPACE = 'TitleBar';
  export default class WindowsTitleBar extends React.Component<{}, IState> {
  private readonly window: Electron.BrowserWindow;
  + private readonly title: string;
  private readonly eventHandlers = {
  onClose: () => this.close(),
  onMaximize: () => this.maximize(),
  @@ -24,6 +25,7 @@ export default class WindowsTitleBar extends React.Component<{}, IState> {
  constructor(props) {
  super(props);
  this.window = remote.getCurrentWindow();
  + this.title = document.title || 'Symphony';
  this.state = {
  isFullScreen: this.window.isFullScreen(),
  isMaximized: this.window.isMaximized(),
  @@ -77,7 +79,7 @@ export default class WindowsTitleBar extends React.Component<{}, IState> {
  </div>
  <div className='title-container'>
  {this.getSymphonyLogo()}
  - <p id='title-bar-title'>{document.title || 'Symphony'}</p>
  + <p id='title-bar-title'>{this.title}</p>
  </div>
  <div className='title-bar-button-container'>
  <button
  