I have a hard difficulty using sessions since the new session reflects on my other browsers too. I like keeping a browser with my old session so i can compare my original code quickly with the new session, but since sessions switch across all browsers immediately, it forces me to just stick with the original session and practice there if i want to be able to see my old code, preventing me from tracking my progress properly
If sessions are browser/cookie based, this issue would be fixed since it would allow different tabs to maintain the session they are on instead of switching immediately once refreshed