Issues

• JIT: .NET 11 Tier1 over-inlines a hot loop and stops inlining its GDV target (2.2x code size, 1.2-1.5x slower than .NET 10)

  area-CodeGen-coreclruntriaged
  dotnet/runtime#137552 · Filter by author Piotr-Nawrot opened on Nov 14, 2026
  1

• Regressions/coreclr/GitHub_134724/test134724/test134724 failing in CI

  area-GC-coreclrarea-Infrastructure-coreclrblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#137549 · Filter by author jkotas opened on Nov 14, 2026
  2

• [Android] Java GC bridge blocks managed weak-reference reads for 100–250 ms

  area-GC-coreclrtenet-performanceuntriaged
  dotnet/runtime#137546 · Filter by author hez2010 opened on Nov 14, 2026
  2

• [ci-scan] Test failure: ProcessOpenTests.GetProcessById_RunningProcess_ReturnsProcess observes a transient child name

  area-System.Diagnostics.Processblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#137544 · Filter by author stephentoub opened on Nov 14, 2026
  3

  

• PersistedAssemblyBuilder: DefineField drops the custom modifiers of a modified field type

  area-System.Reflectionuntriaged
  dotnet/runtime#137542 · Filter by author caraioniurie47 opened on Nov 14, 2026
  1

• [dnceng-bot] Branch runtime/release/8.0 can't be merged to Azdo internal branch

  area-Infrastructureuntriaged
  dotnet/runtime#137538 · Filter by author dotnet-mirroring opened on Nov 14, 2026
  1

• NativeAOT class library references don't embed localized resources

  area-NativeAOT-coreclruntriaged
  dotnet/runtime#137536 · Filter by author ThadHouse opened on Nov 14, 2026
  1

• Specification Comliance Misses

  area-System.Text.Jsonuntriaged
  dotnet/runtime#137533 · Filter by author leo-gan opened on Nov 14, 2026
  2

• GetReplicationCursors doesn't handle a fallback to the legacy replica API partway through pagination

  area-System.DirectoryServices
  dotnet/runtime#137532 · Filter by author tarekgh opened on Nov 14, 2026 · 12.0.0
  1

• [wasm] Skip fetch integrity for fingerprinted assets by default (~25% of CoreCLR WebAssembly cold startup)

  arch-wasmarea-Interop-mono
  dotnet/runtime#137529 · Filter by author davidwrighton opened on Nov 14, 2026 · 12.0.0
  2

• Test failure: X509Certificates.Tests.ChainTests.BuildChain_FailOnlyApplicationPolicy builds to a different microsoft.com root

  area-System.Securityblocking-clean-ciKnown Build Error
  dotnet/runtime#137525 · Filter by author lewing opened on Nov 14, 2026 · 12.0.0
  2

• System.Web.HttpRuntime initialization enumerates every named pipe on the machine: Windows PowerShell 5.1 JSON cmdlets take seconds to minutes once .NET 11 processes hold many pipes

  area-System.IOuntriaged
  dotnet/runtime#137522 · Filter by author PatrizioRicciardelloAtSqlService opened on Nov 13, 2026
  1

• [API Proposal]: Lazy subcommand registration and lookup on System.CommandLine.Command

  api-suggestionarea-System.Consoleuntriaged
  dotnet/runtime#137521 · Filter by author JeremyKuhne opened on Nov 13, 2026
  3

• [wasi] Disposing a TCP socket with an in-flight send blocks the guest (wasmtime waits on output-stream drop)

  arch-wasmarea-System.Net.Socketsos-wasi
  dotnet/runtime#137519 · Filter by author lewing opened on Nov 13, 2026 · 12.0.0
  2

• [API Proposal]: Expose the type and value stored in a System.Reflection.Pointer

  api-ready-for-reviewarea-System.Reflectionuntriaged
  dotnet/runtime#137512 · Filter by author caraioniurie47 opened on Nov 13, 2026
  6

• .NET 11 regression on Windows: redirected Process.StandardOutput/StandardError leak one named pipe handle each after an async read unless the reader is disposed

  area-System.Diagnostics.Process
  dotnet/runtime#137501 · Filter by author PatrizioRicciardelloAtSqlService opened on Nov 13, 2026 · 12.0.0
  5

  

• [wasm][AOT] mono-aot-cross segfaults on EqualityComparer<Id<Self>> where Self is a struct holding Id<Self> (record struct typed ids)

  area-Codegen-AOT-monountriaged
  dotnet/runtime#137500 · Filter by author OliverVea opened on Nov 13, 2026
  2

• .NET 11 thread pool: workers spin full budget after spurious wake-ups, +40-85 % CPU per request vs .NET 10 for request/response socket workloads

  area-System.Threadinguntriaged
  dotnet/runtime#137494 · Filter by author romanett opened on Nov 13, 2026
  2

• [ci-scan] Test failure: SOS_osx-arm64_Release-Bin-Net12.WorkItemExecution (missing .NET 11)

  area-Infrastructureblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#137493 · Filter by author akoeplinger opened on Nov 13, 2026
  1

• [ci-scan] Test failure: Wasm.Build.Tests.PInvokeTableGeneratorTests.UnusedCoreLibEntryPointsAreTrimmed

  arch-wasmarea-Infrastructureblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#137492 · Filter by author akoeplinger opened on Nov 13, 2026
  2

• libclrjit crashes on thread exit in hosts that replace global operator new (.NET 11 regression)

  area-CodeGen-coreclr
  dotnet/runtime#137487 · Filter by author Edenlia opened on Nov 13, 2026 · 12.0.0
  2

  

• [mono][wasm][AOT] llvm-only: a reference passed as an argument is kept on no shadow-stack slot, so a minor GC moves the object and the callee continues with a stale this

  area-Codegen-AOT-monountriaged
  dotnet/runtime#137486 · Filter by author miroslavsiska opened on Nov 13, 2026

• src/tests/JIT/Directed/tls/TlsFieldLibrary tests do not run

  area-ILTools-coreclruntriaged
  dotnet/runtime#137482 · Filter by author jkotas opened on Nov 13, 2026
  1

  

• Managed ilasm emits duplicate MemberRef rows

  area-ILTools-coreclruntriaged
  dotnet/runtime#137481 · Filter by author MichalStrehovsky opened on Nov 13, 2026
  1

  

• Managed ilasm emits unreadable DeclSecurity blobs

  area-ILTools-coreclruntriaged
  dotnet/runtime#137480 · Filter by author MichalStrehovsky opened on Nov 13, 2026
  1