Server-side sessions VS. Client-side sessions

I am confused about creating a session on the server side vs. creating a session on the client side. I successfully create a session on the server side via my web interface, I get code 200, and log the relevant info in both browser console and Appwrite's Exevution logs. But when I refresh the Sessions tab for my user, the tab is empty. Where is the session being created and why is it not listed in the Session's tab?

Testing this myself with NextJS and creating a server side session works just fine and logs it in the sessions tab for the user. What does your code look like that is creating the session?