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[ci-scan] Test failure: GitHub_19288 JIT assert genActualType mismatch in Morph under MinOpts stress

agentic-workflows

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129028 In dotnet/runtime;

· github-actions opened on Jun 5, 2026

Test failure: Microsoft.Extensions.FileProviders.PhysicalFileProviderTests.TokensFiredForOldAndNewNamesOnRename

area-Extensions-FileSystem

blocking-clean-ci-optionalBlocking optional rolling runsBlocking optional rolling runs

JitStressCLR JIT issues involving JIT internal stress modesCLR JIT issues involving JIT internal stress modes

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129027 In dotnet/runtime;

· VincentBu opened on Jun 5, 2026

Official package SourceLink checksums require CR/LF normalization

area-System.Text.Json

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129023 In dotnet/runtime;

· richlander opened on Jun 4, 2026

[API Proposal]: APIs to drive a method's tiered-compilation promotion to its final tier

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-TieredCompilation-coreclr

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129020 In dotnet/runtime;

· timcassell opened on Jun 4, 2026

[ci-scan] Test failure: GC SanityCheck assertion under gcstress on windows x86

agentic-workflows

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129015 In dotnet/runtime;

· github-actions opened on Jun 4, 2026

[ci-scan] Build break: crossgen2 comparison NativeOrReadyToRunImage hash mismatch on linux arm

agentic-workflows

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129013 In dotnet/runtime;

· github-actions opened on Jun 4, 2026

[ci-scan] Test failure: superpmi-asmdiffs browser-wasm no MCH files to replay

agentic-workflows

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

Status: Open.

#129014 In dotnet/runtime;

· github-actions opened on Jun 4, 2026

·  

11.0.0

[ci-scan] Test failure: NumberHandlingTests_Metadata.Number_AsCollectionElement_RoundTrip on NativeAOT windows-x64

agentic-workflows

blocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'Blocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

Known Build ErrorUse this to report build issues in the .NET Helix tabUse this to report build issues in the .NET Helix tab

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129010 In dotnet/runtime;

· github-actions opened on Jun 4, 2026

[API Proposal]: IsClosedTypeAttribute: add DerivedTypes property

api-ready-for-reviewAPI is ready for review, it is NOT ready for implementationAPI is ready for review, it is NOT ready for implementation

area-System.Runtime.CompilerServices

blockingMarks issues that we want to fast track in order to unblock other important workMarks issues that we want to fast track in order to unblock other important work

Status: Open.

#129009 In dotnet/runtime;

· RikkiGibson opened on Jun 4, 2026

Consider supporting AsyncMethodBuilder in runtime-async

area-System.Reflection.Emit

runtime-async

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129004 In dotnet/runtime;

· BrennanConroy opened on Jun 4, 2026

EC keys on prime curves with order > prime are not well handled.

area-System.Security

Status: Open.

Bug

#129003 In dotnet/runtime;

· bartonjs opened on Jun 4, 2026

·  

Future

[API Proposal]: Add configurable list separator to XmlTextAttribute and XmlAttributeAttribute

api-ready-for-reviewAPI is ready for review, it is NOT ready for implementationAPI is ready for review, it is NOT ready for implementation

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-Serialization

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#129001 In dotnet/runtime;

· StephenMolloy opened on Jun 4, 2026

·  

11.0.0