Issues

• TarFile.ExtractToDirectoryAsync fails to extract macOS archive created with tar

  area-System.Formats.Taruntriaged
  dotnet/runtime#137403 · Filter by author ThadHouse opened on Nov 12, 2026
  1

• [ci-scan] Build break: tvOS NativeAOT apps cannot link Swift XPC compatibility symbol

  agentic-workflowsarea-System.Securityblocking-clean-ciKnown Build Error
  dotnet/runtime#137399 · Filter by author github-actions opened on Nov 12, 2026 · 12.0.0
  2

  

• Kestrel HTTPS throughput on linux-arm64 about 20 % lower with .NET 11.0.0 than with 10.0.15 (daily-build bisect points to #131177)

  area-System.Net.Httptenet-performanceuntriaged
  dotnet/runtime#137385 · Filter by author chweidling opened on Nov 11, 2026
  3

• JIT: NullReferenceException in iText layout code on .NET 11.0.0 with optimized code; works on .NET 10

  area-CodeGen-coreclr
  dotnet/runtime#137382 · Filter by author kambbado opened on Nov 11, 2026 · 11.0.0
  3

  

• [Installer] Windows Desktop Runtime Bundle.wxs omits 1033 LCID folder, breaking -lang 1033 and forcing non-English UI on en-US Windows with a secondary keyboard layout

  area-Setupuntriaged
  dotnet/runtime#137376 · Filter by author olynix opened on Nov 11, 2026
  1

• [ci-scan] Build break: Component Detection JavaScript SyntaxError on macOS

  area-Infrastructureblocking-clean-ciKnown Build Erroruntriaged
  dotnet/runtime#137367 · Filter by author stephentoub opened on Nov 11, 2026
  1

• [Governance] Team code owners

  area-Metauntriaged
  dotnet/runtime#137363 · Filter by author NinoFloris opened on Nov 11, 2026
  1

• Backport linux-bionic CoreCLR fixes to release/11.0

  area-Infrastructureos-androiduntriaged
  dotnet/runtime#137361 · Filter by author virzak opened on Nov 11, 2026
  2

  

• Mono asserts when processing value classes larger than 64kB

  area-Infrastructure-monoarea-VM-meta-monodisabled-testuntriaged
  dotnet/runtime#137359 · Filter by author snickolls-arm opened on Nov 11, 2026
  1

• SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_DiagnosticListener_ExpectedTagsRecorded: traceparent was not injected (HTTP/3 loopback cross-talk?)

  area-System.Net.HttpKnown Build Erroruntriaged
  dotnet/runtime#137357 · Filter by author lewing opened on Nov 11, 2026
  1

• Runtime-async: Tier0 code omits saving a live local across an await when the method is first compiled after its async caller has already run (returns null after resumption)

  area-CodeGen-coreclrruntime-asyncuntriaged
  dotnet/runtime#137356 · Filter by author idg10 opened on Nov 11, 2026
  2

  

• DeflateEncoder.Reset() does not return the encoder to a fresh state: output depends on the previous input

  area-System.IO.Compressionuntriaged
  dotnet/runtime#137354 · Filter by author pakkoapp-oss opened on Nov 11, 2026
  1

• Runtime async: awaiting a Task returned by a call adds a thread-pool hop before SynchronizationContext.Post (differs from state machines)

  area-System.Threading.Tasksuntriaged
  dotnet/runtime#137351 · Filter by author timr-github opened on Nov 11, 2026
  1

• DynamicDependency does not resolve the documentation ID of an explicit implementation of a generic interface member (IL2037)

  area-Tools-ILLinkuntriaged
  dotnet/runtime#137350 · Filter by author charlesroddie opened on Nov 11, 2026
  4

• .NET 11 on Arm64 without LSE (Raspberry Pi 4): all ReadyToRun code is rejected, ~3× slower startup, and recompiling with --instruction-set:armv8-a doesn't help

  area-ReadyToRuntenet-performanceuntriaged
  dotnet/runtime#137348 · Filter by author z1c0 opened on Nov 11, 2026
  5

• arm64 ReadyToRun/NativeAOT: in a method over 1 MB, loads of the method's own read-only data (IF_LARGELDC / IF_LARGEADR) are emitted without relocations and read the wrong bytes

  area-CodeGen-coreclruntriaged
  dotnet/runtime#137346 · Filter by author Largo opened on Nov 11, 2026 · 12.0.0
  3

• [RISC-V] Zacas support for Interlocked.CompareExchange

  arch-riscvarea-CodeGen-coreclruntriaged
  dotnet/runtime#137345 · Filter by author equmagg opened on Nov 11, 2026
  1

• PersistedAssemblyBuilder writes an enclosing exception clause before the clauses nested in its handler, so the JIT rejects the method (InvalidProgramException)

  area-System.Reflection.Emituntriaged
  dotnet/runtime#137342 · Filter by author Largo opened on Nov 11, 2026

• Pclmulqdq.V256.CarrylessMultiply returns wrong results under Native AOT with IlcInstructionSet=native

  area-CodeGen-coreclruntriaged
  dotnet/runtime#137341 · Filter by author HMBSbige opened on Nov 11, 2026
  2

• NET11: ECDsa.Create doesn't throw on linux if parameters are wrong

  area-System.Security
  dotnet/runtime#137336 · Filter by author RobSlgm opened on Nov 11, 2026 · 12.0.0
  1

  

• Some MemoryMarshal methods are source incompatible in .NET11

  area-System.Memoryuntriaged
  dotnet/runtime#137334 · Filter by author spannerisms opened on Nov 11, 2026
  4

• JIT: unrolled loop re-dispatches its switch with the index folded to 0 (not backported to .NET 11)

  area-CodeGen-coreclr
  dotnet/runtime#137330 · Filter by author 0xced opened on Nov 11, 2026 · 11.0.0
  2

  

• Monitor.Wait can throw ThreadInterruptedException without reacquiring the lock

  area-System.Threadinguntriaged
  dotnet/runtime#137329 · Filter by author HMBSbige opened on Nov 11, 2026
  5

• BigInteger left shift no longer enforces the maximum length in .NET 11

  area-System.Numericsuntriaged
  dotnet/runtime#137327 · Filter by author Largo opened on Nov 11, 2026
  1

• KillOnParentExit rejects the Microsoft Store PowerShell execution alias with access denied

  area-System.Diagnostics.Processuntriaged
  dotnet/runtime#137325 · Filter by author thomhurst opened on Nov 11, 2026
  1