문자 패널에서 한글로 폰트 이름을 타이핑할 때 첫 글자의 자음이 2번 입력되는 문제

I have been experiencing this issue for several years.

I had been using Windows 10 64-bit until last weekend, when I upgraded to Windows 11 after resetting Windows 10. Illustrator is the Korean version. I am currently using the latest version of Illustrator, but as mentioned above, I have been experiencing this same issue for years, and it has occurred in many older versions of Illustrator as well.

This issue only occurs when searching for fonts in the Character panel. English input works normally; only Korean input is affected. It does not occur when typing text on the artboard with the Type tool, renaming layers or artboards, or entering text in any other Illustrator text fields.

I have also never experienced this issue in any other Adobe applications that I use, including Premiere Pro, InDesign, and Photoshop.

I have never seen an option called "Search Entire Font Name" or "Search First Name Only." Could you please tell me where this setting is located?

Creating a new document or restarting Illustrator has no effect on this issue. The issue occurs consistently every time.

After upgrading to Windows 11, I used it for a while before enabling the "Use previous version of Microsoft IME" option under Settings > Time & language > Language & region > (Korean) Language options > Microsoft IME. I have never used any Korean IME other than the default Microsoft IME.

The attached screen recording was captured while the Windows On-Screen Keyboard was open. However, whether I use the On-Screen Keyboard or my physical keyboard makes no difference. The same issue occurs in both cases.