升级成HBuilder 8.1.0.201704101430后，show（）方法有时候失效！

self = plus.webview.currentWebview();
companyQualificationPage = plus.webview.create('companyQualification.html', 'companyQualification', subpage_style);
self.append(companyQualificationPage);
projectPage = plus.webview.create('projectPage.html', 'projectPage', subpage_style);
projectPage.hide();
当通过切换显示不同子窗口时,子窗口有时候显示不出来，就是切换的时候当切换成projectPage子窗口，但是显示的还是companyQualificationPage。
switch(currentv){
case 0:
plus.webview.hide(projectPage);
self.remove(projectPage);
self.append(companyQualificationPage);
plus.webview.show(companyQualificationPage,"auto",300);
mui.fire(companyQualificationPage, 'init_Prams',{fid:currentOrgid});
break;
case 1:
plus.webview.hide(companyQualificationPage);
self.remove(companyQualificationPage);
self.append(projectPage);
plus.webview.show(projectPage,"auto",300);
mui.fire(projectPage, 'init_Prams',{fid:currentOrgid,type:'-1'});
break;
default:break;
}
S