What happened?

Description:
When typing Korean (Hangul) characters into the Gemini CLI prompt, the
final character of a word or syllable is consistently dropped and does not
appear. For example, if I type a complete word, the last letter is missing.
This issue is specific to the Gemini CLI input field and does not occur in
the standard iTerm2 terminal or other applications.

Steps to Reproduce:

1. Launch the Gemini CLI in an iTerm2 terminal running Oh My Zsh.
2. Switch to the Korean Input Method Editor (IME).
3. Attempt to type a complete Korean word, for example, "안녕하세요".

Expected Behavior:
The full word "안녕하세요" should be typed and displayed correctly in the
input prompt.

Actual Behavior:
The last character of the word is dropped. For instance, typing
"안녕하세요" results in "안녕하세".

Troubleshooting Steps Taken:

• Confirmed that the iTerm2 profile setting Profiles > Text > Unicode
  normalization is set to NFC.
• Confirmed this issue does not occur outside of the Gemini CLI.

What did you expect to happen?

"안녕하세요" results in "안녕하세요".

Client information

Environment:

• OS: macOS
• Terminal: iTerm2
• Shell: Oh My Zsh

Login information

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Anything else we need to know?

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