Power BI Desktop Version: 2.81.5831.761 64-bit (May 2020)
I found typo on Formatting pane.
That should be localized.
Shadow -> 그림자
Shadow position -> 그림자 위치
Preset -> 미리 설정
I will report internally and update here when I got any response.
PG has replied as below:
"This was a late-arriving feature implemented by a Power BI Contributor (MVP), so some localization may be missing in the May Desktop release. Localization has landed in the Power BI Service, and the June release will have these translations."