After user logoff from AWI, user cannot login immediately, waiting time around 90 seconds for re-login.
Note: Current User setting: Max. parallel sessions=1 Min. activity refresh=15
+ Workaround: At the moment, you can increase the max parallel session from 1 to 2. So you can login again right after you logout from AWI.
+ Permanent: Upgrade Automation Engine to 12.1.3 to improve this behavior.