【报bug】ios map polygons区域的地图是黑色的

同一份代码打包了android和ios，map中的polygons多边形围起来的区域ios是黑色的，android是正常的。用的是vue。

<map id="map" :latitude="latitude" :longitude="longitude" :polyline="polylines" :polygons="coords"  
             @markertap='markertap' @callouttap='callouttap' :markers="markerList" :scale="scale" show-location="true"  
             :style="{height: mapHeight + 'px', width: mapWidth + 'px'}">  
            <cover-view style="float:right;display:fixed;right:-650rpx;">  
                <cover-view class="b" style="background-color: #fff;width: 60rpx; height: 60rpx;">  
                    <cover-image src="../../static/image/mylocation.png" style="width: 60rpx; height: 60rpx;"  
                                 mode="aspectFit" @click.stop="getLocalData()">  
                    </cover-image>  
                </cover-view>  
            </cover-view>  
            <!-- 自定义窗口 -->  
            <cover-view slot="callout">  
                <template v-for="(item,index) in markerList">  
                    <cover-view :marker-id="item.id" :key='index'>  
                        <cover-view class="position-relative" style="width: 92rpx; height: 78rpx;">  
                            <cover-image class="position-absolute" style="width: 92rpx; height: 78rpx;"  
                                         src="../../static/meun/jinggao.png"></cover-image>  
                            <cover-view style="top: 13rpx; left: 45rpx; width: 30rpx; height: 30rpx;"  
                                        class="border bg-white rounded-circle flex align-center justify-center position-absolute">  
                                <cover-view>{{ item.type }}</cover-view>  
                            </cover-view>  
                        </cover-view>  
                    </cover-view>  
                </template>  
            </cover-view>  
        </map>