IME: Duplicate text appears after converting Japanese input when moving caret before conversion

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#320,074 2 comments 0 reactions 1 assignee View on GitHub

@aiday-mar is already working on this.

Since Jun 5, 2026.

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This issue has not been assessed yet.

Description

bug editor-input-IME

Does this issue occur when all extensions are disabled?: Yes/No

Does this issue occur when all extensions are disabled?: Yes

  • VS Code Version: 1.123.0
  • OS Version: Windows 11

Steps to Reproduce:

  1. Type "あいうえお".
  2. Move the caret up or down using the arrow keys.
    • The text "あいうえお" stays in place, but the caret moves.
  3. Press the conversion key (変換).
  4. The IME shows "アイウエオ". Confirm the conversion.

Expected Behavior:
Only the converted text ("アイウエオ") should appear.
(and don't move?)

Actual Behavior:
Both the original and converted text appear:

あいうえお
アイウエオ

Two lines remain even though only one conversion was intended.

Dominant language
TypeScript
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