I experience the same issue, in the same manner mp1992.
I'm adding here some of the description I wrote up for another report of this same issue:
Hi, I have the same problem which appeared only after the recent update to 10.8.4 - everything else on the mac remains unchanged (in terms of updates - ie no MacOS updates performed since MRD client 10.8.4 was automatically installed).
I find I need to 'toggle' or 'flick' the 'Adjust for daylight saving time automatically' button to update the time, however this only temporarily corrects the problem and it resets to the incorrect time if my remote machine locks due to inactivity (I work across both PC on AVD and Mac applications and switch between the two, sometimes resulting in my AVD PC locking the screen).
I find 'most' of my applications on the AVD use server-based time, so the time I make entries are centrally timed, BUT I have found that some Outlook appointments are affected by the local machine time and have caused some scheduling problems. This is particularly apparent when sending invites to parties outside my organisation.