选定下拉列表中的神秘图标

Question

我用selectize.js创建了一些下拉列表，并且其中的第一个总是旁边有一个神秘的图标。 如果单击该图标，则会出现如下气泡：

网络流量随即充满了一大堆条目：

网络流量中的最后一个条目具有响应正文：

<svg width="10px" height="6px" viewBox="0 0 10 6" version="1.1" xmlns="http://www.w3.org/2000/svg"><g id="Page-7" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" opacity="1"><g id="inactive" transform="translate(-96.000000, -36.000000)" fill="#000000"><path d="M105.883661,36.6780683 L101.324947,41.6576388 C101.310807,41.6784321 101.315798,41.7058792 101.297499,41.725009 C101.215158,41.8073503 101.106201,41.8431147 100.998908,41.8381243 C100.892447,41.842283 100.784322,41.8065186 100.702812,41.725009 C100.684514,41.7067109 100.689505,41.6792638 100.675365,41.6593023 L96.1166502,36.6797318 C95.9611166,36.5241981 95.9611166,36.2721838 96.1166502,36.1166502 C96.2721838,35.9611166 96.5225347,35.9611166 96.6780683,36.1166502 L100.99974,40.8375525 L105.322243,36.1166502 C105.477777,35.9611166 105.72896,35.9611166 105.883661,36.1166502 C106.038363,36.2721838 106.039195,36.5225347 105.883661,36.6780683 L105.883661,36.6780683 Z" id="Shape"></path></g></g></svg>

这真是令人困惑。有人可以帮忙遮掩一下吗？