cover-view创建椭圆形失败,模拟器显示正常ios安卓都会如下图

<camera mode=“normal” device-position=“front” flash=“false” class=“camera” binderror=“error”>

<cover-view class=“controls”></cover-view>

</camera>

.controls{

    width: 100rpx;

    height: 200rpx;

    border-radius: 50%;

    background: red;

    position: absolute;

    border: 50rpx solid #abc;

}