使用如下代码跳转到微信发票列表页面，当再发票页面点击确定按钮后，第一次能够正常跳转回到我的app中，后续再次跳转到微信发票页面后则不能够返回到原app中，请问是什么原因？

WXChooseInvoiceReq *cardReq = [[WXChooseInvoiceReq alloc]init];

cardReq.appID = appId;

cardReq.signType = signType;

cardReq.timeStamp = timeStamp;

cardReq.nonceStr = nonceStr;

cardReq.cardSign = cardSign;

[BHWXApiManager manager].invoiceCompletion = comptetion;

[WXApi sendReq:cardReq completion:^(BOOL success) {

}];

https://developers.weixin.qq.com/doc/oplatform/Mobile_App/FAQ/iOS.html