CORS cookie未保存在浏览器中

我有一个http端点,可以通过CORS从我的客户机访问。当请求发送到此url时,将设置cookie。此cookie到达客户端(来自Chrome开发工具的屏幕截图):

但是,它不会被保存(来自Chrome Cookies窗口的屏幕截图):

为什么cookie没有保存在浏览器中?我试过Chrome和Firefox,同样的行为。

响应标头:

Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: http://localhost:4200
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Content-Type: application/json;charset=UTF-8
Date: Sat, 08 Sep 2018 20:24:11 GMT
Expires: 0
Pragma: no-cache
Set-Cookie: guestId=79f0c026-c8f9-4820-a825-15381116d714; Max-Age=157680000; Expires=Thu, 07-Sep-2023 20:24:11 GMT
Transfer-Encoding: chunked
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-XSS-Protection: 1; mode=block