https://www.drupal.org/project/drupal/issues/1974928
Update Drupal's default throbber icons [#1974928] | Drupal.org
Jun 19, 2025 - Problem/Motivation The default AJAX progress throbber icons looks poor on a retina display. throbber-active.gif is a low resolution animated GIF....
updatedrupaldefaultthrobbericons