How to logout from Linode manager?
Hello! If you click your username in the upper right corner of the screen, then you can select "Log Out" from the dropdown menu. It'll be the last option on the rightmost column of options under "My Profile".
That's certainly unusual, could you open a ticket and let us know which browser you're using, whether it's on PC or mobile, and the browser version if possible? Be sure to include any browser plugins or addons you're using as well. That way we can investigate on our end.
Aside from the button, you can log out by visiting https://cloud.linode.com/logout
I have this same issue, I have to use incognito browser to login from a different account, so annoying… Honestly this kind of thing is why I moved 99% of my infrastructure away.