On current master, I am noticing that after I login to Koha staff, when I open a new tab in the browser, I am logged into the OPAC. If I log off the OPAC, it logs me off the staff as well. I tested the same browser (Chrome) with our 3.22 production server and it does not have this issue.
It's normal if you are running both staff and OPAC on the same 'URL' with only the ports being different. If you use different subdomains it would not happen.
Thanks for the clarification. I was hoping it was something simple.