I get this occasionally with Chrome on Windows Server 2012R2. Just like you, a refresh of the page which causes a second log-in fixes it. It does not happen all the time for me.
Same thing for me, but the icon is lost forever, it doesn't go back after re-login.
However, it only happens on my server machine
If I use a another mac there's no problem
Looks like I needed to install a legacy version of Java. That fixed it for me!