How to log in as another user? (on this community site) Edited

[Mathieu Yargeau]

I am connected to this community site (obviously since I am able to post this question).

However, after I logged out, if I click "log in", it logs me in automatically without asking me for any credentials. Isn't this a security issue for public computers? Also, if my collegue wants to log in using his account, he's not able to do so...

EDIT: Seems you have to disconnect from id.atlassian.com as well...