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"Failed to get language for textDocument/diagnostic" when saving a new file

Status: Open.

#81410 In dotnet/roslyn;

· RikkiGibson opened on Nov 22, 2025

Exception in CSharpInlineMethodRefactoringProvider

Area-IDE

Status: Open.

#81406 In dotnet/roslyn;

· jhinder opened on Nov 21, 2025

Completion should include C# 14 extension property in object initializers

Status: Open.

#81405 In dotnet/roslyn;

· gdlol opened on Nov 21, 2025

"Introduce parameter" may generate duplicate/ambiguous parameters

Status: Open.

#81400 In dotnet/roslyn;

· jhinder opened on Nov 21, 2025

Proposal: Two-Phase Incremental Generators for Cross-Generator Dependencies

Area-Compilers

Status: Open.

#81395 In dotnet/roslyn;

· StephaneDelcroix opened on Nov 21, 2025

After installing VS2026 all Builds fail with CSC : error CS2016: Code page '1252' is invalid or not installed

Area-Compilers

Status: Open.

Bug

#81381 In dotnet/roslyn;

· vsfeedback opened on Nov 20, 2025

· 

18.3

Add <code>Type</code> in <code>IRangeVariableSymbol</code>

api-needs-workAPI needs work before it is approved, it is NOT ready for implementationAPI needs work before it is approved, it is NOT ready for implementation

Area-Compilers

Concept-APIThis issue involves adding, removing, clarification, or modification of an API.This issue involves adding, removing, clarification, or modification of an API.

Status: Open.

Feature

#81379 In dotnet/roslyn;

· Rekkonnect opened on Nov 20, 2025

· 

18.3

Resolve subtle different between ArgumentKind and IsImplicit in IOp tree for collection expression <code>with()</code>

Area-Compilers

Feature - Collection ArgumentsCollection expression with() argumentsCollection expression with() arguments

Status: Open.

Bug

#81377 In dotnet/roslyn;

· CyrusNajmabadi opened on Nov 20, 2025

· 

18.3

Non-deterministic resources section in .deps.json for csc, vbc and VBCSCompiler

Status: Open.

#81376 In dotnet/roslyn;

· omajid opened on Nov 20, 2025

"Create and assign field" refactoring produces invalid code with primary constructors

Area-IDE

Status: Open.

Bug

#81374 In dotnet/roslyn;

· vsfeedback opened on Nov 20, 2025

Add Exception Handling Robustness Analysis Rules to Roslyn

Area-IDE

Feature Request

Status: Open.

#81371 In dotnet/roslyn;

· shitake2333 opened on Nov 20, 2025

Document.GetOptionsAsync returns wrong TabSize for VB document

Area-IDE

Status: Open.

#81369 In dotnet/roslyn;

· AlexanderEgurtsovDX opened on Nov 20, 2025