unable to rewrite selection in CJK

[scarf005]

Type: Bug

_20250623_020711.webm

1. select any word
2. attempt to rewrite by pressing any key in korean input method
3. it doesn't work
4. confirmed this bug doesn't happen in code but only on code-insiders.

tested code version:

$ code --version
1.101.1
18e3a1ec544e6907be1e944a94c496e302073435
x64

VS Code version: Code - Insiders 1.102.0-insider (bdc1dd9, 2025-06-20T09:31:30.580Z)
OS version: Linux x64 6.14.11-300.fc42.x86_64
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 5 5600G with Radeon Graphics (12 x 4241)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off webnn: disabled_off
Load (avg)	1, 1, 1
Memory (System)	30.68GB (20.56GB free)
Process Argv	.
Screen Reader	no
VM	0%
DESKTOP_SESSION	plasma
XDG_CURRENT_DESKTOP	KDE
XDG_SESSION_DESKTOP	KDE
XDG_SESSION_TYPE	wayland

Extensions (151)

Extension	Author (truncated)	Version
vscode-userscript	adp	1.3.2
open-folder-in-explorer	adr	1.2.0
TabOut	alb	0.2.2
pug	ama	1.0.1
tsl-problem-matcher	amo	0.6.2
vscode-subtitles	ast	0.4.0
brainfuck-syntax	att	0.0.1
Nix	bbe	1.0.1
github-markdown-preview	bie	0.3.0
jsdoc-markdown-highlighting	bie	0.0.1
lit-html	bie	1.11.1
markdown-checkbox	bie	0.4.0
markdown-emoji	bie	0.3.1
markdown-footnotes	bie	0.1.1
markdown-mermaid	bie	1.28.0
markdown-preview-github-styles	bie	2.2.0
markdown-yaml-preamble	bie	0.1.0
vscode-fish	bma	1.0.39
mermaid-markdown-syntax-highlighting	bpr	1.7.4
open-props-lsp	Cal	1.0.1
ruff	cha	2025.24.0
cmake-format	che	0.6.11
vscode-astyle	chi	0.9.0
path-intellisense	chr	2.10.0
package-json-upgrade	cod	3.2.1
gitignore	cod	0.10.0
doxdocgen	csc	1.4.0
unicode-math-input	czh	0.7.0
shebang-language-associator	dav	1.4.0
vscode-deno	den	3.44.2
dhall-lang	dha	0.0.4
vscode-dhall-lsp-server	dha	0.0.4
docker	doc	0.10.0
dprint	dpr	0.16.5
vscode-generate-getter-setter	DSK	0.5.0
gitlens	eam	17.2.0
EditorConfig	Edi	0.17.4
file-icons	fil	1.1.0
dependi	fil	0.7.15
shell-format	fox	7.2.5
copilot	Git	1.336.0
copilot-chat	Git	0.29.2025062002
vscode-github-actions	git	0.27.2
vscode-pull-request-github	Git	0.113.2025062020
vscode-graphql	Gra	0.13.2
vscode-graphql-syntax	Gra	1.3.8
vscode-systemd-support	han	3.0.0
pyscript	Har	0.1.1
debug-visualizer	hed	2.4.0
crontab-syntax-highlight	hog	0.0.2
vscode-env	Iro	0.1.0
elastic-tabstops-lite	isr	1.0.0
vscode-codeowners	jas	1.1.1
better-cpp-syntax	jef	1.27.1
better-shellscript-syntax	jef	1.10.0
es6-string-markdown	jeo	1.1.2
nix-ide	jno	0.4.21
svg	joc	1.5.4
gruvbox-material-icon-theme	Jon	1.1.5
vscode-gutter-preview	kis	0.32.2
vscode-package-json-inspector	kri	0.2.0
restructuredtext	lex	190.4.10
vscode-clangd	llv	0.2.0
color-picker	Mar	1.0.0
marp-vscode	mar	3.2.0
vscode-catch2-test-adapter	mat	4.17.1
Kotlin	mat	1.7.1
asm-code-lens	maz	2.6.5
git-graph	mhu	1.30.0
auto-commit-msg	Mic	0.27.2
vscode-nbt	Mis	0.9.3
theme-monokai-pro-vscode	mon	2.0.7
language-gettext	mro	0.5.0
vscode-containers	ms-	2.0.3
vscode-docker	ms-	2.0.0
vscode-language-pack-ko	MS-	1.102.2025061809
csdevkit	ms-	1.30.23
csharp	ms-	2.80.16
vscode-dotnet-runtime	ms-	2.3.5
playwright	ms-	1.1.15
debugpy	ms-	2025.11.2025061301
python	ms-	2025.8.0
vscode-pylance	ms-	2025.6.100
jupyter	ms-	2025.5.0
jupyter-keymap	ms-	1.1.2
jupyter-renderers	ms-	1.1.0
vscode-jupyter-cell-tags	ms-	0.1.9
vscode-jupyter-slideshow	ms-	0.1.6
remote-containers	ms-	0.418.0
remote-ssh	ms-	0.120.0
remote-ssh-edit	ms-	0.87.0
vscode-remote-extensionpack	ms-	0.26.0
cmake-tools	ms-	1.20.53
hexeditor	ms-	1.11.1
live-server	ms-	0.4.15
remote-explorer	ms-	0.5.0
remote-server	ms-	1.5.2
vscode-copilot-vision	ms-	0.2.2025032409
vscode-speech	ms-	0.16.0
vscode-speech-language-pack-ko-kr	ms-	0.5.0
vscode-typescript-next	ms-	5.9.20250621
export-typescript	msc	0.4.2
linux-desktop-file	nic	0.0.21
vscode-mogami	nin	0.0.44
vscode-twoslash-queries	Ort	1.5.0
bun-vscode	ove	0.0.28
inline-html	pus	0.3.10
sqlite-viewer	qwt	0.10.6
webgl-glsl-editor	rac	1.3.8
diff	raf	0.0.1
vscode-xml	red	0.29.0
vscode-yaml	red	1.18.0
llvm-ir	rev	1.0.5
llvm	RRe	0.2.0
rust-analyzer	rus	0.4.2507
vscode-coverage-gutters	rya	2.13.0
linter-xo	sam	3.22.1
scala	sca	0.5.9
metals	sca	1.52.0
uridecode	sry	0.3.6
vscode-standard	sta	2.1.3
ninja	sur	0.0.1
rust-pack	Swe	0.3.38
even-better-toml	tam	0.21.2
emmylua	tan	0.9.22
markdown-links	tch	0.8.0
ayu	tea	1.0.5
open-in-browser	tec	2.0.0
python-tox	the	1.0.0
vscode-nushell-lang	The	1.10.0
obs-switcher	tho	0.1.4
shellcheck	tim	0.37.7
graphviz-interactive-preview	tin	0.3.5
qtvsctools	ton	0.11.0
cron-explained	tum	1.3.1
vscode-choosealicense	ult	0.9.4
vscode-remark	uni	3.0.0
unison	uni	1.2.1
errorlens	use	3.26.0
vscode-lldb	vad	1.11.4
intellicode-api-usage-examples	Vis	0.2.9
vscodeintellicode	Vis	1.3.2
vscode-conventional-commits	viv	1.26.0
vscode-wakatime	Wak	25.0.6
vscode-import-cost	wix	3.3.0
vscode-mdx-preview	xyc	0.3.3
pretty-ts-errors	Yoa	0.6.1
gitconfig-lsp	yy0	0.10.2
material-theme	zhu	3.19.0
html-css-class-completion	Zig	1.20.0
vscode-open-in-github	ziy	1.3.6

(8 theme extensions excluded)

[tamuratak]

Toggling the editor.editContext setting might resolve the issue. Note that the setting ID has changed in the latest Insiders build.

cc: @aiday-mar

I can reproduce the same issue with Google Japanese IME on macOS:

Version: 1.102.0-insider
Commit: bdc1dd9
Date: 2025-06-20T09:31:30.580Z
Electron: 35.5.1
ElectronBuildId: 11727614
Chromium: 134.0.6998.205
Node.js: 22.15.1
V8: 13.4.114.21-electron.0
OS: Darwin x64 22.6.0

[aiday-mar]

Hi thanks for commenting on this issue. I am trying to reproduce this on my macOS (since @tamuratak mentioned this happens on darwin os) and I see the following:

Screen.Recording.2025-06-23.at.10.01.00.mov

I select an English word and I am able to rewrite it into 2-set korean and Japanese.

Since you mentioned that this happens only on VS Code Insiders but not on Stable, I infer that this is caused by a recent change to the EditContext code. I recently made a change and reverted it last Friday here : #251902.

Perhaps it could be that after you upgrade your Insiders version, this will no longer happen?

[scarf005]

@aiday-mar confirmed it works on macos on latest insiders with editcontext enabled. will check on linux too later.

Version: 1.102.0-insider (Universal)
Commit: 33ea51e6852f55e950f74302a057f4c0bedf148d
Date: 2025-06-23T05:04:14.290Z
Electron: 35.5.1
ElectronBuildId: 11727614
Chromium: 134.0.6998.205
Node.js: 22.15.1
V8: 13.4.114.21-electron.0
OS: Darwin arm64 24.4.0