Field flexslider broken on plugin cache clear

I have this problem, too. For anonymous users flexslider in a view is not visible, for logged in users flexslider is visible.

if (!empty($optionset) && !in_array($optionset->id(), $cache)) {
    $cache[] = $optionset->id();
    $attached['drupalSettings']['flexslider']['optionsets'] = [
      $optionset->id() => $optionset->getOptions(TRUE),
    ];
  }

This obviously cannot work with multiple optionsets, because all optionsets are replaced with the current one.

Patch for branch 3.x

Automatically closed - issue fixed for 2 weeks with no activity.