【报Bug】正式打包后，tabbbar图标不显示，自定义基座正常显示

示例代码：

"tabBar": {  
        "color": "#b5b5b5",  
        "selectedColor": "#f77016",  
        "borderStyle": "black",  
        "backgroundColor": "#ffffff",  
        "height": "56px",  
        "list": [{  
                "pagePath": "pages/tabBar/index/index",  
                "iconPath": "/static/images/tabbar/ic_home_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_home_selected.png",  
                "text": "首页"  
            },  
            {  
                "pagePath": "pages/tabBar/classify/classify",  
                "iconPath": "/static/images/tabbar/ic_product_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_product_selected.png",  
                "text": "分类"  
            },  
            {  
                "pagePath": "pages/tabBar/zhibo/zhibo",  
                "iconPath": "/static/images/tabbar/ic_find_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_find_selected.png",  
                "text": "直播"  
            },  
            {  
                "pagePath": "pages/tabBar/cart/cart",  
                "iconPath": "/static/images/tabbar/ic_car.png",  
                "selectedIconPath": "/static/images/tabbar/ic_car_normal.png",  
                "text": "进货单"  
            },  
            {  
                "pagePath": "pages/tabBar/users/users",  
                "iconPath": "/static/images/tabbar/ic_my_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_my_selected.png",  
                "text": "我的"  
            }  
        ]  
    }

操作步骤：

"tabBar": {  
        "color": "#b5b5b5",  
        "selectedColor": "#f77016",  
        "borderStyle": "black",  
        "backgroundColor": "#ffffff",  
        "height": "56px",  
        "list": [{  
                "pagePath": "pages/tabBar/index/index",  
                "iconPath": "/static/images/tabbar/ic_home_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_home_selected.png",  
                "text": "首页"  
            },  
            {  
                "pagePath": "pages/tabBar/classify/classify",  
                "iconPath": "/static/images/tabbar/ic_product_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_product_selected.png",  
                "text": "分类"  
            },  
            {  
                "pagePath": "pages/tabBar/zhibo/zhibo",  
                "iconPath": "/static/images/tabbar/ic_find_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_find_selected.png",  
                "text": "直播"  
            },  
            {  
                "pagePath": "pages/tabBar/cart/cart",  
                "iconPath": "/static/images/tabbar/ic_car.png",  
                "selectedIconPath": "/static/images/tabbar/ic_car_normal.png",  
                "text": "进货单"  
            },  
            {  
                "pagePath": "pages/tabBar/users/users",  
                "iconPath": "/static/images/tabbar/ic_my_normal.png",  
                "selectedIconPath": "/static/images/tabbar/ic_my_selected.png",  
                "text": "我的"  
            }  
        ]  
    }

预期结果：

正常显示tabbar图标

实际结果：

无法显示