Auto indent ignores tabsize configured for C# and uses general tab size #8755
Description
Type: Bug
Issue Description
vscode-csharp-indent.mp4
The automatic indentation seems to ignore the language specific setting for editor.tabSize.
The last version that worked correctly was v2.90.60 of the C# extension, and after that, several automatic indentation related things started going wonky. This is still not working as of 2.97.38 of the C# extension.
Steps to Reproduce
My user settings.json contains the following:
{
"editor.tabSize": 2,
"[csharp]": {
"editor.tabSize": 4,
"editor.defaultFormatter": "csharpier.csharpier-vscode"
},
...To reproduce, say I have the following code
class SomeClass
{
void thing() {}
}Then if I place the cursor between the braces for the thing method and press Enter and type something, say "int".
Expected Behavior
What I'd expect is
class SomeClass
{
void thing()
{
int
}
}That is, it should automatically indent using my configured tab size for C# of 4.
Actual Behavior
the result is the following.
class SomeClass
{
void thing()
{
int
}
}That is, it's automatically formatted the braces but using an indentation size of 2 spaces (my general tabSize setting).
Extension version: 2.97.38
VS Code version: Code - Insiders 1.106.0-insider (18dcf126ce32be16046183e72da1438a4b4dbed6, 2025-11-07T01:27:38.699Z)
OS version: Windows_NT x64 10.0.26100
Modes:
Logs
C# log
2025-11-07 09:52:32.966 [info] Locating .NET runtime version 9.0.1
2025-11-07 09:52:34.484 [info] Dotnet path: C:\Program Files\dotnet\dotnet.exe
2025-11-07 09:52:34.485 [info] Activating C# + C# Dev Kit...
2025-11-07 09:52:34.916 [info] [stdout] info: Program[0]
Server started with process ID 13532
2025-11-07 09:52:36.348 [info] [stdout] {"pipeName":"\\\\.\\pipe\\47a76fe3"}
2025-11-07 09:52:36.348 [info] received named pipe information from server
2025-11-07 09:52:36.349 [info] client has connected to server
2025-11-07 09:52:36.521 [info] [Program] Language server initialized
2025-11-07 09:52:40.477 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Optalitix.DataStore.csproj loaded by C# Dev Kit
2025-11-07 09:52:40.730 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Example\Example.csproj loaded by C# Dev Kit
2025-11-07 09:52:40.737 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Tests\Optalitix.DataStore.Tests.csproj loaded by C# Dev Kit
2025-11-07 09:55:39.726 [info] Installing C# dependencies...
2025-11-07 09:55:39.726 [info]
2025-11-07 09:55:39.726 [info] Platform: win32, x86_64
2025-11-07 09:55:39.726 [info]
2025-11-07 09:55:39.726 [info] Downloading package 'Language server for Roslyn Copilot integration'
2025-11-07 09:55:41.138 [info] (47 KB)
2025-11-07 09:55:41.138 [info] .......
2025-11-07 09:55:41.418 [info] .......
2025-11-07 09:55:41.419 [info] ......
2025-11-07 09:55:41.419 [info] Done!
2025-11-07 09:55:41.420 [info] Validating download...
2025-11-07 09:55:41.420 [info] Integrity Check succeeded.
2025-11-07 09:55:41.421 [info] Installing package 'Language server for Roslyn Copilot integration'
2025-11-07 09:55:41.421 [info]
2025-11-07 09:55:41.444 [info] Finished
2025-11-07 09:55:41.444 [info]
2025-11-07 09:55:41.913 [info] Locating .NET runtime version 9.0.1
2025-11-07 09:55:46.625 [info] Dotnet path: C:\Program Files\dotnet\dotnet.exe
2025-11-07 09:55:46.625 [info] Activating C# + C# Dev Kit...
2025-11-07 09:55:47.245 [info] [stdout] info: Program[0]
Server started with process ID 32644
2025-11-07 09:55:49.154 [info] [stdout] {"pipeName":"\\\\.\\pipe\\3efe4f06"}
2025-11-07 09:55:49.154 [info] received named pipe information from server
2025-11-07 09:55:49.155 [info] client has connected to server
2025-11-07 09:55:49.296 [info] [Program] Language server initialized
2025-11-07 09:55:52.859 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Tests\Optalitix.DataStore.Tests.csproj loaded by C# Dev Kit
2025-11-07 09:55:52.889 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Optalitix.DataStore.csproj loaded by C# Dev Kit
2025-11-07 09:55:52.895 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Example\Example.csproj loaded by C# Dev Kit
2025-11-07 09:56:13.062 [info] Locating .NET runtime version 9.0.1
2025-11-07 09:56:14.103 [info] Dotnet path: C:\Program Files\dotnet\dotnet.exe
2025-11-07 09:56:14.103 [info] Activating C# + C# Dev Kit...
2025-11-07 09:56:14.422 [info] [stdout] info: Program[0]
Server started with process ID 33788
2025-11-07 09:56:15.596 [info] [stdout] {"pipeName":"\\\\.\\pipe\\3add00d0"}
2025-11-07 09:56:15.596 [info] received named pipe information from server
2025-11-07 09:56:15.597 [info] client has connected to server
2025-11-07 09:56:15.703 [info] [Program] Language server initialized
2025-11-07 09:56:18.855 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Example\Example.csproj loaded by C# Dev Kit
2025-11-07 09:56:18.893 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Optalitix.DataStore.csproj loaded by C# Dev Kit
2025-11-07 09:56:18.900 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\Projects\Optalitix\Optalitix.DataSource\Tests\Optalitix.DataStore.Tests.csproj loaded by C# Dev Kit
C# LSP Trace Logs log
Environment Information
VSCode version: 1.106.0-insider
C# Extension: 2.97.38
Using OmniSharp: false
Dotnet Information
.NET SDK: Version: 9.0.306 Commit: cc9947ca66 Workload version: 9.0.300-manifests.abe91478 MSBuild version: 17.14.28+09c1be848Runtime Environment:
OS Name: Windows
OS Version: 10.0.26100
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\9.0.306\
.NET workloads installed:
There are no installed workloads to display.
Configured to use loose manifests when installing new manifests.
Host:
Version: 9.0.10
Architecture: x64
Commit: e1f19886fe
.NET SDKs installed:
8.0.415 [C:\Program Files\dotnet\sdk]
9.0.306 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.21 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.10 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.21 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.10 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.12 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.21 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.10 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]
Environment variables:
Not set
global.json file:
Not found
Learn more:
https://aka.ms/dotnet/info
Download .NET:
https://aka.ms/dotnet/download
Visual Studio Code Extensions
| Extension | Author | Version | Folder Name |
|---|---|---|---|
| black-formatter | ms-python | 2025.3.11831009 | ms-python.black-formatter-2025.3.11831009 |
| bun-vscode | oven | 0.0.31 | oven.bun-vscode-0.0.31 |
| code-spell-checker | streetsidesoftware | 4.2.6 | streetsidesoftware.code-spell-checker-4.2.6 |
| code-viz-stat | vizzuhq | 0.1.4 | vizzuhq.code-viz-stat-0.1.4 |
| cpptools-extension-pack | ms-vscode | 1.3.1 | ms-vscode.cpptools-extension-pack-1.3.1 |
| cpptools-themes | ms-vscode | 2.0.0 | ms-vscode.cpptools-themes-2.0.0 |
| csdevkit | ms-dotnettools | 1.70.3 | ms-dotnettools.csdevkit-1.70.3-win32-x64 |
| csharp | ms-dotnettools | 2.97.38 | ms-dotnettools.csharp-2.97.38-win32-x64 |
| csharpier-vscode | csharpier | 2.1.0 | csharpier.csharpier-vscode-2.1.0 |
| debugpy | ms-python | 2025.15.2025110501 | ms-python.debugpy-2025.15.2025110501-win32-x64 |
| docker | docker | 0.18.0 | docker.docker-0.18.0-win32-x64 |
| gitlens | eamodio | 17.6.2 | eamodio.gitlens-17.6.2 |
| hexeditor | ms-vscode | 1.11.1 | ms-vscode.hexeditor-1.11.1 |
| jupyter | ms-toolsai | 2025.10.2025101002 | ms-toolsai.jupyter-2025.10.2025101002-win32-x64 |
| jupyter-keymap | ms-toolsai | 1.1.2 | ms-toolsai.jupyter-keymap-1.1.2 |
| jupyter-renderers | ms-toolsai | 1.3.2025062701 | ms-toolsai.jupyter-renderers-1.3.2025062701 |
| karma-problem-matcher | rctay | 1.0.1 | rctay.karma-problem-matcher-1.0.1 |
| live-server | ms-vscode | 0.4.16 | ms-vscode.live-server-0.4.16 |
| makefile-tools | ms-vscode | 0.12.17 | ms-vscode.makefile-tools-0.12.17 |
| markdown-mermaid | bierner | 1.29.0 | bierner.markdown-mermaid-1.29.0 |
| material-product-icons | PKief | 1.7.1 | pkief.material-product-icons-1.7.1 |
| mypy-type-checker | ms-python | 2025.3.12581007 | ms-python.mypy-type-checker-2025.3.12581007 |
| prettier-vscode | esbenp | 11.0.0 | esbenp.prettier-vscode-11.0.0 |
| pylint | ms-python | 2025.3.12271016 | ms-python.pylint-2025.3.12271016 |
| python | ms-python | 2025.17.2025110501 | ms-python.python-2025.17.2025110501-win32-x64 |
| remote-containers | ms-vscode-remote | 0.430.0 | ms-vscode-remote.remote-containers-0.430.0 |
| remote-wsl | ms-vscode-remote | 0.104.3 | ms-vscode-remote.remote-wsl-0.104.3 |
| rust-analyzer | rust-lang | 0.4.2671 | rust-lang.rust-analyzer-0.4.2671-win32-x64 |
| slidev | antfu | 51.4.0 | antfu.slidev-51.4.0 |
| sqlite-viewer | qwtel | 0.10.6 | qwtel.sqlite-viewer-0.10.6-win32-x64 |
| volar | Vue | 3.1.3 | vue.volar-3.1.3 |
| vscode-containers | ms-azuretools | 2.2.0 | ms-azuretools.vscode-containers-2.2.0 |
| vscode-counter | uctakeoff | 3.7.2 | uctakeoff.vscode-counter-3.7.2 |
| vscode-dotnet-runtime | ms-dotnettools | 2.3.9 | ms-dotnettools.vscode-dotnet-runtime-2.3.9 |
| vscode-ebnf | igochkov | 1.4.0 | igochkov.vscode-ebnf-1.4.0 |
| vscode-firefox-debug | firefox-devtools | 2.15.0 | firefox-devtools.vscode-firefox-debug-2.15.0 |
| vscode-graphql | GraphQL | 0.13.2 | graphql.vscode-graphql-0.13.2 |
| vscode-graphql-syntax | GraphQL | 1.3.8 | graphql.vscode-graphql-syntax-1.3.8 |
| vscode-icons | vscode-icons-team | 12.15.0 | vscode-icons-team.vscode-icons-12.15.0 |
| vscode-jest | Orta | 6.4.4 | orta.vscode-jest-6.4.4 |
| vscode-jupyter-cell-tags | ms-toolsai | 0.1.9 | ms-toolsai.vscode-jupyter-cell-tags-0.1.9 |
| vscode-jupyter-slideshow | ms-toolsai | 0.1.6 | ms-toolsai.vscode-jupyter-slideshow-0.1.6 |
| vscode-pylance | ms-python | 2025.9.1 | ms-python.vscode-pylance-2025.9.1 |
| vscode-python-envs | ms-python | 1.11.13081015 | ms-python.vscode-python-envs-1.11.13081015-win32-x64 |
| vscode-tailwindcss | bradlc | 0.14.29 | bradlc.vscode-tailwindcss-0.14.29 |
| vscode-theme-onedark | akamud | 2.3.0 | akamud.vscode-theme-onedark-2.3.0 |
| vscode-wakatime | WakaTime | 25.4.0 | wakatime.vscode-wakatime-25.4.0 |
| vscode-yaml | redhat | 1.19.1 | redhat.vscode-yaml-1.19.1 |
C# Settings
| Setting | Value |
|---|---|
| preferCSharpExtension | false |
| compilerDiagnosticScope | openFiles |
| analyzerDiagnosticScope | openFiles |
| enableXamlTools | true |
| useServerGC | true |
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) Ultra 7 165U (14 x 2688) |
| GPU Status | 2d_canvas: enabled 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 trees_in_viz: 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) | 31.46GB (7.41GB free) |
| Process Argv | --crash-reporter-id eacfa160-48bd-448f-909d-ad9b7b677265 |
| Screen Reader | no |
| VM | 0% |
A/B Experiments
vsliv368cf:30146710
pythonvspyt551:31249597
nativeloc1:31118317
dwcopilot:31158714
dwoutputs:31242946
copilot_t_ci:31333650
g012b348:31231168
6gi0g917:31259950
pythonrdcb7:31268811
pythonpcpt1:31399616
6518g693:31302842
6abeh943:31336334
envsactivate1:31349248
editstats-enabled:31346256
aa_c:31379597
t123456:31413567
cloudbuttont:31366566
aihoversummaries_t:31413033
todos-1:31405333
v66_all_req:31396048
3efgi100_wstrepl:31403338
trigger-command-fix:31379601
chat-sessions-view-c:31407656
auto_model_enabled:31385282
use-responses-api:31390341
applesignin:31399434
9i271672:31414246
je187915:31401257
control_gfa0i828:31401959
j1f0b290:31405249
2a0ce269:31405335
disable_auto_fix_gb0j8799:31411651
agentic_ask_h7d75428:31406124
ec5jj548:31408805
ff8f5884:31411053
terminalsuggestenabled:31411718
cmp-ext-control:31413469
terminal:31413574