1.VUE mint index-list plug-in IOS cannot scroll locally

when scrolling, it will drive the search box down together

<mt-index-list>
        <mt-index-section index="A">
          <mt-cell title="Aaron"></mt-cell>
          <mt-cell title="Alden"></mt-cell>
          <mt-cell title="Austin"></mt-cell>
        </mt-index-section>
        <mt-index-section index="B">
          <mt-cell title="Baldwin"></mt-cell>
          <mt-cell title="Braden"></mt-cell>
        </mt-index-section>
        
        ...
        
</mt-index-list>