vue中使用微信开放标签wx-open-subscribe，按钮在一进页面的时候不显示，必须刷新页?

 <wx-open-subscribe v-show="isBtnshow==6" @success="success" @error="subError" :template="timeplate" id="subscribe-btn">

        <script type="text/wxtag-template">

          <style>

            .btns {

                width: 100%;

                text-align:center;

                color:#fff;

                font-size:15px;

            }

          </style>

          <p class="btns">开始学习</p>

        </script>

      </wx-open-subscribe>