tabBar设置隐藏后仍然占位

设置tabbar,position为top:

"tabBar": {     "borderStyle": "white",     "backgroundColor": "#ffffff",     "position": "top",     "list": [       {         "pagePath": "pages/index/index"       },       {         "pagePath": "pages/index/map"       },       {         "pagePath": "pages/team/index"       },       {         "pagePath": "pages/mine/index"       }     ]   }

在app.js的onLaunch方法中隐藏掉tabbar：

onLaunch: function(options) {     // Do something initial when launch.     var that = this;     wx.hideTabBar()     wx.getSystemInfo({       success: function(res) {         var model = res.model;         if (res.system.indexOf('iOS') > -1) {           that.globalData.isiOS = true         }           if (model.indexOf('iPhone X') > -1) {           that.globalData.isIpx = true         }       }     })   },

在大部分手机中，tabbar都不占位，但是个别手机中，顶部会有空白占位（下图蓝色框的部分）：

有问题的测试机信息为：