2016 – SharePoint site prompt username and password

Everything is working fine but I have a strange behavior.

When I leave my office and came after 1 hour , the site is asking to enter user name and password.

In the same browser, and the same session, when I open a new tab, add the same url, it’s working without prompt. The URL is of trusted site.

I am sure it’s not a permissions issue.

Is there a session timeout or something like this?

Issue happened in Chrome and IE is set to login with the current user and password!

I didn’t submit information in form! I just locked my PC and came back after 30 minutes approximately, perform refresh, the chrome asking for user name and password for all sites!