webviewGroup 无法关闭waiting 加载等待菊花

已经加上了waiting:{ autoShow:false}， 不起作起，还是会显示加载等待菊花，无法关掉它。        

mui.init();  

            mui.plusReady(function() {  
                var group = new webviewGroup("viewgroup", {  
                    items: [{  
                        id: "tab-top-subpage-1.html",  
                        url: "tab-top-subpage-1.html",  
                        extras: {},waiting:{ autoShow:false}  
                    }, {  
                        id: "tab-top-subpage-2.html",  
                        url: "tab-top-subpage-2.html",  
                        extras: {},waiting:{ autoShow:false}  
                    }, {  
                        id: "tab-top-subpage-3.html",  
                        url: "tab-top-subpage-3.html",  
                        extras: {},waiting:{ autoShow:false}  
                    }, {  
                        id: "tab-top-subpage-4.html",  
                        url: "tab-top-subpage-4.html",  
                        extras: {},waiting:{ autoShow:false}  
                    }, {  
                        id: "tab-top-subpage-5.html",  
                        url: "tab-top-subpage-5.html",  
                        extras: {},waiting:{ autoShow:false}  
                    }],  
                    onChange: function(obj) {  
                        var c = document.querySelector(".mui-control-item.mui-active");  
                        if(c) {  
                            c.classList.remove("mui-active");  
                        }  
                        document.querySelector(".mui-scroll .mui-control-item:nth-child(" + (parseInt(obj.index) + 1) + ")").classList.add("mui-active");  
                    }  
                });  
                mui(".mui-scroll").on("tap", ".mui-control-item", function(e) {  
                    var wid = this.getAttribute("data-wid");  
                    group.switchTab(wid);  
                });  

            });  
            mui.back = function() {  
                var _self = plus.webview.currentWebview();  
                _self.close("auto");  
            }