Korean IME works in 9.0.20 but fails in current Windows client when connecting to macOS

I am experiencing a similar issue, but in my case the problem is not limited to fullscreen mode.

My setup is:

- Host: Mac Studio running macOS
- Client 1: ThinkPad X1 Carbon running the current Jump Desktop Windows client
- Client 2: GPD MicroPC 2 running Jump Desktop 9.0.20
- Connection type: Fluid
- Korean input method: Microsoft Korean IME on Windows
- Mac input source: ABC

On the current Windows client installed on the ThinkPad X1, Korean input does not work at all, either in windowed mode or fullscreen mode.

English characters are entered normally. However, after switching the Windows Microsoft IME to Korean, pressing letter keys produces no Korean characters and no composition text. Korean text copied from Windows can still be pasted into the remote Mac normally.

For comparison, I connected to the exact same Mac Studio from another Windows device using Jump Desktop 9.0.20.

With version 9.0.20:

- Korean input works normally in windowed mode.
- I can switch A/가 using the physical Korean/English key, which is the Right Alt key on the Korean keyboard.
- The Mac input source remains ABC.
- No special Korean key mapping is required.
- Korean input has never worked correctly for me in fullscreen mode, even on 9.0.20.

I also configured the current Windows client to match the working 9.0.20 setup:

- Connection keyboard profile: Windows
- Enable Key Conversions: On
- Defer Modifiers: On
- Default Windows key conversions
- Send Windows Shortcuts: In Fullscreen
- Mac input source: ABC
- Windows Microsoft IME: Korean

The current client still accepts English only and produces no Korean characters.

This A/B test uses the same Mac host and the same Fluid connection. The main difference is the Windows Jump Desktop client version. This strongly suggests a regression in Korean IME handling in the newer Windows client.

Could the Jump Desktop team please investigate this and provide either a fix or an official way to install the last Windows version that supported Korean input in windowed mode?