message: PanelHeaderButton: fixed iOS activeMode
diff: @@ -56,7 +56,7 @@ const PanelHeaderButton: FunctionComponent<PanelHeaderButtonProps> = ({
  activeMode = 'background';
  break;
  case IOS:
  - hoverMode = 'opacity';
  + hoverMode = 'background';
  activeMode = 'opacity';
  break;
  case VKCOM:
  