message: Make the pulldown widget in the Tip Viewer appear when clicked again
diff: @@ -249,6 +249,13 @@ export class TipViewer extends ViewerElement implements config.AcceptsConfigMana
  }
  });
  + containerDiv.addEventListener('focus', (ev: FocusEvent) => {
  + if (ev.target instanceof HTMLSelectElement) {
  + ev.stopPropagation();
  + return;
  + }
  + }, true);
  +
  this._setTipHTML(this._getTipHTML(this._tipIndex));
  const nextButton = DomUtils.getShadowId(this, ID_NEXT_BUTTON);
  @@ -311,7 +318,7 @@ export class TipViewer extends ViewerElement implements config.AcceptsConfigMana
  template.id = ID;
  template.innerHTML = `<style id="${ThemeableElementBase.ID_THEME}">
  </style>
  - <div id="${ID_CONTAINER}" tabindex="-1" class="container-fluid">
  + <div id="${ID_CONTAINER}" class="container-fluid">
  <div id="${ID_CONTENT}"></div>
  <div id="${ID_CONTROLS}" class="form-inline">
  <div class="btn-group">
  