Period In Advance Search Problem

Hello
Since I upgrade my cs-cart to new version 4.8.1. Period in Advance Search doesn't work in new admin panel but still can work in old admin panel. Is this bug? I try to check on demo of cs-cart website is still same problem. How can I solve this problem?
Thank you very much for suggestion.

https://forum.cs-cart.com/tracker/issue-7278-issue-with-admin-panel-period-serch/

deleted