Hey Balaji,
I will be releasing KBA 1942884 about this issue as I identified the problem as related to the Rich Client not parsing correctly SI_ATTRIBUTES provided by the CMS during the login phase.
The SI_ATTRIBUTES are filled by "User Management Attributes" within the CMC.
It seems this issue only impact Webi Rich Client in 3-tier mode and in the scenario where User Management Attributes exist in the platform. The Java applet is not impacted as far as I know.
This is referenced to our Product Group under ADAPT01712698
Best regards