I just checked the ido specific remember me cookie and it is being set with an expiration of 1 year. If you manually logout then that cookie will be removed. Otherwise you will be automatically authenticated if your wordpress specific cookies expire. I believe wordpress has a max of 2 weeks.
I haven’t experienced this issue myself. I’ll do some testing over the weekend to make sure it is working as expected.
Wordpress will store multiple sessions under a user’s account for each device they are logged in with. It is possible to logout all sessions but that takes manual action to do so. I am not aware of anything set up to do this automatically. We’ve had the social login plugin installed on the site since Monday, I believe. Is this when the issue started?