Upgrading GX440/GX450/RV50 cause loss of Active Directory (Tacacs) authenication

I have test this on GX440/GX450/RV50, as soon as I upgrade the gateway to 4.9.3.002, I loose the ability to use tacacs authenication. I have verified shared secret and settings in out Tacacs server.

Has any else experienced the same issue? If so, is there a fix?