Can you fix the bug of font issue?

Question

version: trados 2021 SR1 - 16.1.3.4096 
 problem : font issue(ㅁㅁ) 
 
 There is function that change font option in trados. 
 But it does not works in some language( Republic of Korea) 
 my target area(and my basic font) can not express some language word like you can see the problem in image(kammaㅁㅁhāna) 
 Can you fix the bug of font issue? 
 I can not understand. Even some general text editor app can change font.

Paul · Answer

Kim Jae Youn 
 Please can you provide an sdlxliff with just that sentence in it?

Paul · Answer

Kim Jae Youn 
 I spoke to Yurim Bae and the reported bug seems to be CRQ-6943 for your information and to make it easier to reference later. The bug record suggests this is related to the use of certain custom fonts, such as Malgun Gothic and Noto Sans. Can you tell me what font you are using under File -> Options -> Editor -> Font Adaptation -> Custom Fonts and have you tried using a different one?

Trados Studio > 1. Trados Studio

Can you fix the bug of font issue?