Repository navigation
C# Dev Kit auto-insert ignores editor.autoClosingBrackets and editor.formatOnType #9804
Description
Summary
With C# Dev Kit enabled, typing { and pressing Enter in a C# file automatically inserts/indents a closing } and moves the opening { to its own line.
This happens despite C# auto-closing and format-on-type being explicitly disabled.
Disabling C# Dev Kit stops the behavior, but Visual Studio Tools for Unity depends on C# Dev Kit.
Environment
- VS Code: 1.139.0
- C# Dev Kit: 3.40.204
- C#: 2.160.4
- .NET Install Tool: 3.2.0
- Visual Studio Tools for Unity: 1.3.1
- OS: Windows
Relevant VS Code settings
"editor.autoClosingBrackets": "never",
"editor.autoIndent": "keep",
"editor.formatOnType": false,
"[csharp]": {
"editor.formatOnType": false,
"editor.formatOnSave": false,
"editor.formatOnPaste": false,
"editor.autoClosingBrackets": "never"
},
"csharp.format.enable": false
Relevant .editorconfig settings
[*.cs]
csharp_new_line_before_open_brace = none
csharp_indent_braces = false
Steps to reproduce
- Enable C# Dev Kit.
- Open a
.csfile in a loaded solution. - Type
void Foo() {and press Enter.
Expected behavior
The opening brace remains on the same line, no closing brace is inserted, and normal indentation is preserved:
void Foo() {
|
Actual behavior
Roslyn inserts/reformats braces:
void Foo()
{
|
}
Isolation performed
- Reloading VS Code with extensions disabled stops the behavior.
- Disabling C# Dev Kit alone stops the behavior.
- The C# extension’s
registerOnAutoInserthandler processes{and newline changes independently ofeditor.autoClosingBracketsandeditor.formatOnType. - Filtering
{and newline from that handler locally fixes the issue while keeping C# Dev Kit and Visual Studio Tools for Unity enabled.
Requested behavior
Please make Roslyn auto-insert honor:
editor.autoClosingBrackets: "never"editor.formatOnType: false
Alternatively, please add a user setting that disables Roslyn auto-insert for braces and newlines.
Activity
dibarbet commentedon Sep 23, 2026
To disable this behavior, turn off
dotnet.autoInsert.enableAutoInsertandrewfender commentedon Sep 23, 2026
@dibarbet That is not an ideal solution, as it disables various other auto-formatting/auto-insert behaviours that are desireable. Auto-completion/auto-formatting of braces should be configurable independently (and were, until very recently - this issue only arose for me since yesterday).
dibarbet commentedon Sep 23, 2026
Hmm I can't reproduce this:
Are you able to share your project at all? Can you run the
csdevkit.collectLogswith these settings, and reproduce the issue under the recording?andrewfender commentedon Sep 23, 2026
csdevkit-logs-2026-09-23T21-47-46.zip
CSTest.zip
2026-09-23.22-47-12.mp4
I reproduced it here with an empty project. I've attached the logs and the project.
dibarbet commentedon Sep 23, 2026
@andrewfender thanks for the logs and details! At least from your latest repro, this is happening because you just have a C# file open with no context on what project it belongs to. C# files need to be part of a project, or have directives indicating it's a standalone file based app. See this for more details - https://learn.microsoft.com/en-us/dotnet/csharp/fundamentals/program-structure/#file-based-apps-vs-project-based-apps
Without those, the extension treats the file as a 'Miscellaneous File' and generally runs in a degraded state. In this state the
.editorconfigis not applied. The C# language status bar will indicate you're in this state by the 'Miscellaenous Files' label:I noticed you might be using Unity - Unity should be generating the project (
.csproj) for you, though I believe some setup in Unity is required.andrewfender commentedon Sep 24, 2026
2026-09-24.07-50-44.mp4
csdevkit-logs-2026-09-24T06-51-13.zip
TestProject.zip
Reproduced in an empty Unity project, as shown here. Attached the C# Dev Kit logs and the project itself (excluding Library).
(The opening brace being moved to a new line seems to not happen every time. I can't determine the exact steps or context that determines whether it happens or not. The closing brace being moved & indented does happen every time.)
Just to reiterate that this issue only arose within the last 2 days; I've never seen it happen before with Unity. It feels very much like a recent extension update issue, although from what I see none of my extensions have been updated that recently (and I already tried rolling back various extensions to their second-latest versions).
andrewfender commentedon Oct 20, 2026
Bump. This is labelled "Resolved-Configuration Issue", but there doesn't seem to be a configuration that fixes this particular problem. The only config that was suggested is to disable
dotnet.autoInsert.enableAutoInsert, but doing so turns off all auto-insert behaviour, not just this particular case. Again, this is an issue that only started recently -enableAutoInsertwas turned on before without this issue happening.My previous comment shows a repro of the issue in a fresh project with
Assembly-CSharpas the active context, so it isn't an issue with no project context as suggested above.Can this issue be reopened?