Bug in VietNamese font, please help

Hi Katalon Team,

I am a Vietnamese. I am using Katalon for auto testing on web app in Vietnamese. And I am facing a problem about Vietnamese font.
Problem:
In script view, I declare a String as below:
String text_toSearch = ‘Bảo Tâm Autotest Linh Hoạt’
-> But when I save and close the Katalon -> then open Katalon again -> the “text_toSearch” displayed incorrectly as following:
_String text_toSearch = ‘B?o T�m Autotest Linh Ho?t’
_
I also need to verify (assertion) Text in VietName font, but now I cannot because this problem.

So any helps?
Thanks !

I think that the following post applies to VietNamese as well: