Open
Description
Type: Bug
Issue: Error Editing Files with Sonnet Models in Edit/Agent Mode
Description
When using GitHub Copilot in VS Code with the edit or agent mode, everything works fine when reading file contents with Sonnet series models. However, when attempting to edit files, an error occurs and the edit operation fails.
Reading files: ✅ Works as expected
Editing files: ❌ Fails with an error (only with Sonnet models)
Steps to Reproduce
- Enable Copilot's edit or agent mode in VS Code.
- Select a Sonnet series model.
- Attempt to edit a file (e.g., apply a code suggestion or refactor).
- Observe the error.
Expected Behavior
- File editing should work the same as with other models.
- No errors should occur during the edit operation.
Actual Behavior
- Editing fails with an error when using Sonnet models.
- Reading file content still works normally.
Error Logs
06c105a9-0ca3-4b70-8409-0cd204975516
2025-06-22 09:47:48.431 [info] message 0 returned. finish reason: [stop]
2025-06-22 09:47:48.431 [info] request done: requestId: [851ca5a1-f14a-474e-9902-688087ca1385] model deployment ID: []
2025-06-22 09:49:04.413 [info] request done: requestId: [1de6f025-7e9f-4e74-a37e-771d54f11472] model deployment ID: []
2025-06-22 09:49:04.416 [error] Error: net::ERR_CONNECTION_CLOSED
at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/utility_init:2:10635)
at SimpleURLLoaderWrapper.emit (node:events:518:28)
at SimpleURLLoaderWrapper.emit (node:domain:489:12)
at SimpleURLLoaderWrapper.topLevelDomainCallback (node:domain:161:15)
at SimpleURLLoaderWrapper.callbackTrampoline (node:internal/async_hooks:128:24): Error on conversation request
Screenshots
VS Code version: Code - Insiders 1.102.0-insider (bdc1dd9, 2025-06-20T09:31:30.580Z)
OS version: Windows_NT x64 10.0.26100
Modes:
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) Ultra 7 155H (22 x 2995) |
| 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: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off |
| Load (avg) | undefined |
| Memory (System) | 31.50GB (11.27GB free) |
| Process Argv | --crash-reporter-id 05935d56-3272-4810-9e7b-4494a08ab935 |
| Screen Reader | no |
| VM | 0% |
Extensions (152)
| Extension | Author (truncated) | Version |
|---|---|---|
| codesnap | adp | 1.3.4 |
| markdown-mermaid | bie | 1.28.0 |
| vs-code-bpmn-io | bpm | 0.22.1 |
| vscode-tailwindcss | bra | 0.14.23 |
| ruff | cha | 2025.24.0 |
| npm-intellisense | chr | 1.4.5 |
| path-intellisense | chr | 2.10.0 |
| vscode-markdownlint | Dav | 0.60.0 |
| vscode-eslint | dba | 3.0.15 |
| dbcode | dbc | 1.14.11 |
| FreeMarker | dco | 0.0.9 |
| dingtalk-toolkit | Din | 0.2.11 |
| docker | doc | 0.10.0 |
| githistory | don | 0.6.20 |
| gitlens | eam | 2025.6.2105 |
| EditorConfig | Edi | 0.17.4 |
| vscode-demo-time | eli | 1.5.1 |
| magick-image-reader | ely | 0.5.0 |
| prettier-vscode | esb | 11.0.0 |
| shell-format | fox | 7.2.5 |
| codespaces | Git | 1.17.3 |
| copilot | Git | 1.336.0 |
| copilot-chat | Git | 0.29.2025062002 |
| remotehub | Git | 0.65.2024112101 |
| vscode-github-actions | git | 0.27.2 |
| vscode-pull-request-github | Git | 0.113.2025062020 |
| gc-excelviewer | Gra | 4.2.63 |
| vscode-maven-helper | hen | 1.0.2 |
| output-colorizer | IBM | 0.1.2 |
| icon-fonts | idl | 2.5.4 |
| latex-workshop | Jam | 10.10.0 |
| svg | joc | 1.5.4 |
| vscode-gutter-preview | kis | 0.32.2 |
| vscode-leetcode | Lee | 0.18.4 |
| i18n-ally | lok | 2.13.1 |
| marp-vscode | mar | 3.2.0 |
| rainbow-csv | mec | 3.19.0 |
| template-string-converter | meg | 0.6.1 |
| dotenv | mik | 1.0.1 |
| ecdc | mit | 1.8.0 |
| vscode-filesize | mkx | 3.2.2 |
| vscode-containers | ms- | 2.0.3 |
| csdevkit | ms- | 1.30.23 |
| csharp | ms- | 2.83.5 |
| dotnet-interactive-vscode | ms- | 1.0.6313021 |
| vscode-dotnet-pack | ms- | 1.0.13 |
| vscode-dotnet-runtime | ms- | 2.3.5 |
| vscodeintellicode-csharp | ms- | 2.2.3 |
| vscode-pgsql | ms- | 1.4.2 |
| playwright | ms- | 1.1.15 |
| autopep8 | ms- | 2025.3.11051009 |
| black-formatter | ms- | 2025.2.0 |
| debugpy | ms- | 2025.11.2025061301 |
| flake8 | ms- | 2025.3.11051009 |
| gather | ms- | 2025.4.0 |
| isort | ms- | 2025.1.11191009 |
| mypy-type-checker | ms- | 2025.3.11071011 |
| pylint | ms- | 2025.3.10971010 |
| python | ms- | 2025.9.2025062001 |
| vscode-pylance | ms- | 2025.6.100 |
| vscode-python-envs | ms- | 0.3.11701010 |
| datawrangler | ms- | 1.23.0 |
| jupyter | ms- | 2025.6.2025061701 |
| jupyter-hub | ms- | 2024.10.1002831100 |
| jupyter-keymap | ms- | 1.1.2 |
| jupyter-renderers | ms- | 1.1.2025012901 |
| python-ds-extension-pack | ms- | 0.0.1 |
| vscode-jupyter-cell-tags | ms- | 0.1.9 |
| vscode-jupyter-powertoys | ms- | 0.1.1 |
| vscode-jupyter-slideshow | ms- | 0.1.6 |
| remote-containers | ms- | 0.418.0 |
| remote-ssh | ms- | 0.121.2025053015 |
| remote-ssh-edit | ms- | 0.87.0 |
| remote-wsl | ms- | 0.99.0 |
| remote-wsl-recommender | ms- | 0.0.20 |
| vscode-remote-extensionpack | ms- | 0.26.0 |
| cmake-tools | ms- | 1.21.31 |
| copilot-mermaid-diagram | ms- | 0.0.2025061901 |
| cpptools | ms- | 1.26.2 |
| cpptools-extension-pack | ms- | 1.3.1 |
| extension-test-runner | ms- | 0.0.12 |
| hexeditor | ms- | 1.11.1 |
| live-server | ms- | 0.5.2025061601 |
| powershell | ms- | 2025.3.0 |
| remote-explorer | ms- | 0.6.2025051209 |
| remote-repositories | ms- | 0.43.2024112101 |
| remote-server | ms- | 1.5.2 |
| vscode-github-issue-notebooks | ms- | 0.0.133 |
| vscode-serial-monitor | ms- | 0.13.250621001 |
| vscode-speech | ms- | 0.16.0 |
| vscode-speech-language-pack-zh-cn | ms- | 0.5.1 |
| vscode-typescript-next | ms- | 5.9.20250621 |
| vscode-websearchforcopilot | ms- | 0.1.2025061901 |
| vsliveshare | ms- | 1.0.5948 |
| windows-ai-studio | ms- | 0.14.4 |
| typescript-explorer | mxs | 0.4.2 |
| neo4j-for-vscode | neo | 1.11.0 |
| angular-console | nrw | 18.54.2 |
| indent-rainbow | ode | 8.3.1 |
| vscode-versionlens | pfl | 1.22.2 |
| material-icon-theme | PKi | 5.23.0 |
| postman-for-vscode | Pos | 1.12.1 |
| vscode-css-peek | pra | 4.4.3 |
| inline-html | pus | 0.3.10 |
| geo-data-viewer | Ran | 2.6.0 |
| tmlanguage-syntax-highlighter | Red | 2.7.5 |
| java | red | 1.42.0 |
| vscode-commons | red | 0.0.6 |
| vscode-community-server-connector | red | 0.26.19 |
| vscode-rsp-ui | red | 0.24.11 |
| vscode-xml | red | 0.29.2025051008 |
| vscode-yaml | red | 1.18.0 |
| redis-for-vscode | Red | 1.4.0 |
| omegasheets-vscode | rep | 0.2.0 |
| LiveServer | rit | 5.7.9 |
| roo-cline | Roo | 3.21.3 |
| claude-dev | sao | 3.17.15 |
| docxreader | Sha | 1.1.3 |
| sonarlint-vscode | Son | 4.24.0 |
| code-spell-checker | str | 4.2.0 |
| code-spell-checker-cspell-bundled-dictionaries | str | 2.0.1 |
| vscode-stylelint | sty | 1.5.3 |
| shellcheck | tim | 0.37.7 |
| vscode-decompiler | tin | 0.1.0 |
| tom | 1.2.2 | |
| native-preview | Typ | 0.20250621.1 |
| luna-paint | Tyr | 0.16.0 |
| errorlens | use | 3.26.0 |
| intellicode-api-usage-examples | Vis | 0.2.9 |
| vscodeintellicode | Vis | 1.3.2 |
| vscodeintellicode-completions | Vis | 2.0.1 |
| explorer | vit | 1.26.0 |
| vscode-css-compatibility | viv | 1.0.2 |
| vscode-boot-dev-pack | vmw | 0.2.2 |
| vscode-spring-boot | vmw | 1.63.0 |
| migrate-java-to-azure | vsc | 0.5.1 |
| vscode-app-mod-pack | vsc | 0.2.1 |
| vscode-java-debug | vsc | 0.58.2025042405 |
| vscode-java-dependency | vsc | 0.24.1 |
| vscode-java-pack | vsc | 0.29.2025060902 |
| vscode-java-test | vsc | 0.43.1 |
| vscode-java-upgrade | vsc | 0.18.0 |
| vscode-maven | vsc | 0.44.2024072906 |
| vscode-spring-boot-dashboard | vsc | 0.14.2025041702 |
| vscode-spring-initializr | vsc | 0.11.2025051201 |
| volar | Vue | 2.2.10 |
| vscode-wakatime | Wak | 25.0.6 |
| quokka-vscode | Wal | 1.0.729 |
| vscode-import-cost | wix | 3.3.0 |
| pretty-ts-errors | Yoa | 0.6.1 |
| markdown-all-in-one | yzh | 3.6.3 |
| material-theme | zhu | 3.19.0 |
(1 theme extensions excluded)
A/B Experiments
vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
pythonvspyt551:31249597
vscod805:30301674
c4g48928:30535728
a9j8j154:30646983
962ge761:30841072
dsvsc014:30777825
dsvsc015:30821418
h48ei257:31000450
pythontbext0:30879054
cppperfnew:30980852
dwnewjupytercf:31046870
pythonrstrctxt:31093868
nativeloc1:31118317
e80f6927:31120813
dwcopilot:31158714
5b1c1929:31184661
6074i472:31201624
dwoutputs:31242946
customenabled:31248079
9064b325:31222308
copilot_t_ci:31222730
g012b348:31231168
pythoneinst12:31251391
bgtreat:31252123
c7cif404:31309980
5b33h341:31326279
pythonpulldiag:31287486
6gi0g917:31259950
editoredits36407:31282444
996jf627:31264550
pythonrdcb7:31268811
usemplatestapi:31297334
jdghv92:31317040
747dc170:31275146
pythoncompactctx:31296835
6518g693:31302842
generatesymbolt:31280541
convertfstringf:31280702
j97ad248:31306657
2jfb0375:31329897
usemarketplace:31331644
0g1h6703:31329154
id45c886:31333049
nes-emitfast-0:31331754
no_f_c:31333023
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