About Korean Chat on In-game Overlay

When type Korean chat on in-game Overlay, It types double it. like When I try type "아" but in-game overlay makes "아아". and when I try type "ㅃ,ㅉ,ㄸ,ㄲ,ㅆ" on Discord Overlay w/ shift, It doesnt type. Just type original one like "ㅂ,ㅈ,ㄷ,ㄱ,ㅅ". When i try type "딴 거" on Discord In-game Overlay. It types like "단단 거" Discord please FIX This one for koreans. It's so annoying for Koreans.