message: fix: placeholder after avatar was removed
diff: @@ -58,6 +58,10 @@ export default class AvatarSet {
  let color = Color.generate(text);
  $(elements).each(function() {
  + $(this).css({
  + 'background-image': '',
  + });
  +
  avatarPlaceholder($(this), text, color, jid);
  });
  }
  