为什么auth服务不记得身份验证？

I have an auth guard and auth service which work correctly. But when I trying to open my application in a new browser tab I'm not logged in. My app required the login from me again. I think auth service must remember me while application doesn't restart, but isn't work. How to change this for remembering me without entering login and password for each new tabs? I have an auth guard and auth service which wor