Login info management

Here is the background story:

I run one perspective project on two different browsers, Chrome with 0.5 ip address and Edge with 0.6 ip address. I assume whenever I reopen the browser with the perspective page, it will add a new id shown in the login_id column in the attached file, which I grab directly from id in the session props section. Meanwhile, when I log in, the authentication will be admin and guest instead when I logout.

Then a weird thing I noticed between line 23 and 26. I logged in as admin on Edge with 0.6 ip address, and at a certain moment, admin was logged out under 0.5 ip address instead and logged in again under 0.6 ip address simultaneously, which cannot be done by myself as shown in line 24 and 25. After that, it seems the authentication system back to normal and I logged out properly.

Any idea why it would happen?