Issues

• WebAssembly AOT skips an intermediate base-class static constructor

  area-Codegen-AOT-monountriaged
  dotnet/runtime#137067 · Filter by author appel1 opened on Nov 6, 2026
  1

• Native AOT: a static profile (MibcFile) makes ILC miscompile a foreach over IEnumerable<int> passed an int[]

  area-NativeAOT-coreclruntriaged
  dotnet/runtime#137063 · Filter by author mwadams opened on Nov 6, 2026
  1

• [WASM] Interlocked.Increment/Decrement use CAS helper loops in single-threaded code

  arch-wasmarea-CodeGen-coreclruntriaged
  dotnet/runtime#137061 · Filter by author MichalStrehovsky opened on Nov 6, 2026
  2

• Clarify in breaking-change rules and R2R that converting a struct to an enum is a breaking change

  area-crossgen2-coreclruntriaged
  dotnet/runtime#137055 · Filter by author davidwrighton opened on Nov 6, 2026
  2

  

• ReadyToRun: Unsafe cross-version-bubble compile-time folding in comparer and RuntimeHelpers intrinsics

  area-crossgen2-coreclruntriaged
  dotnet/runtime#137054 · Filter by author davidwrighton opened on Nov 6, 2026

• OleDbDataReader.GetBytes/GetChars throw ArgumentOutOfRangeException for a zero-length read at the end of the buffer

  area-System.Buffersuntriaged
  dotnet/runtime#137051 · Filter by author alaricd opened on Nov 5, 2026

• DbTransaction.SupportsSavepoints docs say Release/ReleaseAsync are expected to throw, but they are no-ops by design

  area-System.Transactionsuntriaged
  dotnet/runtime#137040 · Filter by author alaricd opened on Nov 5, 2026
  1

• System.Data.OleDb: OleDbParameterCollection.RemoveAt throws IndexOutOfRangeException, IList.RemoveAt documents ArgumentOutOfRangeException

  area-System.Data.OleDBuntriaged
  dotnet/runtime#137039 · Filter by author alaricd opened on Nov 5, 2026
  2

• Runtime async: await and .Result reach different overrides when a [PreserveBaseOverrides] MethodImpl names the grand-base method

  area-TypeSystem-coreclrruntime-asyncuntriaged
  dotnet/runtime#137038 · Filter by author pcshrosbree opened on Nov 5, 2026
  2

• Consider generic code sharing for single-object-field C# union structs

  area-TypeSystem-coreclrtenet-performance
  dotnet/runtime#137028 · Filter by author kayle opened on Nov 5, 2026 · Future
  4

• Support pre-shared keys authentication for TLS 1.3

  area-System.Net.Security
  Feature

  dotnet/runtime#137021 · Filter by author rzikm opened on Nov 5, 2026 · 12.0.0
  1

• Missing debug symbols for libmonosgen-2.0.so arm64 .NET9-android

  area-Debugger-monountriaged
  dotnet/runtime#137018 · Filter by author slepmog opened on Nov 5, 2026
  1

• JSImport generator output fails with CS9377 under the updated memory safety rules

  arch-wasmarea-System.Runtime.InteropServices.JavaScriptfeature-requestos-browser
  dotnet/runtime#137017 · Filter by author beauchama opened on Nov 5, 2026 · Future
  3

  

• [browser][mono] Span cleanup is skipped when a JS import throws

  arch-wasmarea-System.Runtime.InteropServices.JavaScriptblocking-clean-ciKnown Build Erroros-browser
  dotnet/runtime#137011 · Filter by author pavelsavara opened on Nov 5, 2026 · Future
  1

  

• Backport #119383 to release/10.0: workstation background GC silently falls back to blocking gen2

  area-GC-coreclruntriaged
  dotnet/runtime#137005 · Filter by author ben-da6 opened on Nov 5, 2026
  1

• Finalization in multithreaded WASM

  arch-wasmarea-VM-coreclr
  dotnet/runtime#137000 · Filter by author MichalStrehovsky opened on Nov 5, 2026 · Future
  2

• Remove linux-x86 support in .NET 12

  arch-x86area-Metaos-linuxuntriaged
  dotnet/runtime#136997 · Filter by author am11 opened on Nov 5, 2026
  8

• [ci-scan] Test failure: Regressions/coreclr/GitHub_76531/test76531/test76531

  agentic-workflowsarea-CodeGen-Interpreter-coreclrblocking-clean-ciin-prKnown Build Error
  dotnet/runtime#136993 · Filter by author github-actions opened on Nov 5, 2026
  2

• Test failure: Microsoft.Extensions.Hosting.WindowsServiceLifetimeTests.ExceptionOnStartIsPropagated

  area-Extensions-Hostingblocking-clean-ci-optionalKnown Build Error
  dotnet/runtime#136992 · Filter by author VincentBu opened on Nov 5, 2026 · 12.0.0
  1

  

• SoundPlayer.Play() does not preserve in-memory WAV buffer lifetime

  area-System.IObuguntriaged
  dotnet/runtime#136991 · Filter by author ViveliDuCh opened on Nov 5, 2026
  1

• FileSystemGlobbing: Matcher throws ArgumentOutOfRangeException when the rootDir is the same value as the file

  area-Extensions-FileSystem
  dotnet/runtime#136989 · Filter by author RikkiGibson opened on Nov 4, 2026 · Future
  1

• # System.DirectoryServices.Protocols on Linux: a signal during a request fails it with LDAP error 81 (LDAP_OPT_RESTART is never set)

  area-System.DirectoryServicesuntriaged
  dotnet/runtime#136988 · Filter by author shorbachuk opened on Nov 4, 2026
  1

• Transaction timeout is lost when many threads start transactions at the same time

  area-System.Transactionsuntriaged
  dotnet/runtime#136986 · Filter by author asylkhan-azat opened on Nov 4, 2026
  2

• Configuration binders differ when collection elements lack scalar values or providers throw

  area-Extensions-Configurationbugsource-generator
  dotnet/runtime#136974 · Filter by author svick opened on Nov 4, 2026 · 12.0.0
  1

• Configuration binder source generator emits unqualified List<T> when binding arrays without implicit usings

  area-Extensions-Configurationbugsource-generator
  Bug

  dotnet/runtime#136972 · Filter by author svick opened on Nov 4, 2026 · Future
  1