Korean character add twice when typing for Windows IME

Summary

When typing in korean example 오늘 만나서 반갑습니다 but on HipChat client the character got enter twice resulting to 오늘늘 만나서서 반갑습니다다.

Environment

• Windows 7 64bit
• Windows 7 32bit
• Windows 8.1

Steps to reproduce

1. Set your language to Korean using Microsoft IME
2. Start typing
3. The character will add twice when pressing enter or pressing spacebar
4. Pressing enter :
   
5. Pressing spacebar :
   

Expected Results

User should be able to type korean language without issue

Actual Results

When typing a korean character got added twice instead of a single character

Workaround

Uninstall 4.0 client and install 2.2 client which you can download here