[Visualize]: Authentication error after logout - login

Hi,

i do have an authentication error, if a login a second time after a logout!

Fiddle example: http://jsfiddle.net/4eytbvvb/

Steps for reproducing:

1. Press "login" -> report works fine
2. Press "logout"
3. Press "login" again -> causes an authentication error.

It seems to be a problem in Jaspersoft 6.2. Has anyone the same problem?

Best regards