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Test failure: pgostress assert "block->bbCodeOffs <= succBlock->bbCodeOffs"

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

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

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

Status: Open.

#127346 In dotnet/runtime;

· dhartglassMSFT opened on Apr 23, 2026

System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnTimeout_KillsOnTimeout failure on linux-x64 with checked CoreCLR

area-System.Diagnostics.Process

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.

#127341 In dotnet/runtime;

· jkoritzinsky opened on Apr 23, 2026

[aw] Breaking Change Documentation failed

agentic-workflows

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

Status: Open.

#127338 In dotnet/runtime;

· github-actions opened on Apr 23, 2026

build.sh does not work on Ubuntu 26.04

area-Infrastructure

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

Status: Open.

#127334 In dotnet/runtime;

· vcsjones opened on Apr 23, 2026

Support open generics in polymorphic serialization in System.Text.Json

area-System.Text.Json

enhancementProduct code improvement that does NOT require public API changes/additionsProduct code improvement that does NOT require public API changes/additions

Status: Open.

#127317 In dotnet/runtime;

· aromaa opened on Apr 23, 2026

[Perf] Linux/arm64: 2 Regressions on 4/13/2026 11:16:41 PM +00:00

arch-arm64

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

os-linuxLinux OS (any supported distro)Linux OS (any supported distro)

runtime-coreclrspecific to the CoreCLR runtimespecific to the CoreCLR runtime

tenet-performancePerformance related issuePerformance related issue

tenet-performance-benchmarksIssue from performance benchmarkIssue from performance benchmark

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

Status: Open.

#127326 In dotnet/runtime;

· performanceautofiler opened on Apr 23, 2026

Release Tag 10.0.7 is missing for dotnet/runtime

area-Infrastructure

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

Status: Open.

#127311 In dotnet/runtime;

· jekula opened on Apr 23, 2026

[API Proposal]: System.Text.Json union type support

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.Text.Json

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.

#127299 In dotnet/runtime;

· eiriktsarpalis opened on Apr 22, 2026

·  

11.0.0

SocketsHttpHandler TLS handshake fails with 'Broken pipe' over IPv6 on macOS 26 Tahoe (.NET 10)

area-System.Net.Http

needs-author-actionAn issue or pull request that requires more info or actions from the author.An issue or pull request that requires more info or actions from the author.

Status: Open.

#127283 In dotnet/runtime;

· chanido opened on Apr 22, 2026

·  

Future

Optimize comparison methods in immutable collections

area-System.Collections

tenet-performancePerformance related issuePerformance related issue

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

Status: Open.

#127279 In dotnet/runtime;

· aw0lid opened on Apr 22, 2026

[clr-interp] Line number off-by-one for non-leaf interpreter frames in debugger stack traces

area-Diagnostics-coreclr

os-iosApple iOSApple iOS

Status: Open.

#127277 In dotnet/runtime;

· kotlarmilos opened on Apr 22, 2026

·  

11.0.0

Further runtime async enhancements for suspension-heavy async code

area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMICLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

runtime-async

tenet-performancePerformance related issuePerformance related issue

Status: Open.

#127273 In dotnet/runtime;

· jakobbotsch opened on Apr 22, 2026

·  

11.0.0