The inability to create a new calendar event through the Kerio Connect client using Google Chrome and Apple Safari browsers

Hello to all!

The other day, one of our users discovered an unpleasant problem when creating a new event in the calendar of our web client Kerio Connect, in the current version of Kerio Connect 8.3.
An attempt to create an event was carried out using Google Chrome or Apple Safari browsers based on Windows Vista and newer, with the installed update KB 2998527 .
As a result, the browser tab with the open client "hung", the amount of RAM consumed by this tab is constantly growing, which forced the user to restart the browser or tab.

Owing to the conducted research the following was found:
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1) When attempting to create an event, a Java script, executed on the server side, receives incorrect data about the system time from the browser itself.



2) This behavior is related to the internal malfunction of the Chrome engine itself, to which the malfunction is registered, apparently the same song with Safari.

3) A workaround is possible while in the form of a time zone change from GMT + 0300 (RTZ 2) to GMT +4

Have a good winter time all. :)