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Perf regression: caching, json

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

performance

Status: Open.

#66343 In dotnet/aspnetcore;

· pr-benchmarks opened on Apr 16, 2026

Perf improvement: json

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

Status: Open.

#66342 In dotnet/aspnetcore;

· pr-benchmarks opened on Apr 16, 2026

Support per-document JsonSerializerOptions in OpenAPI schema generation

api-proposal

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

area-minimalIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etcIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etc

feature-openapi

Status: Open.

#66340 In dotnet/aspnetcore;

· lauraneto opened on Apr 16, 2026

Set AdditionalProperties if Type has JsonExtensionData attribute.

area-minimalIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etcIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etc

feature-openapi

feature-request

Status: Open.

#66338 In dotnet/aspnetcore;

· n-rowe opened on Apr 16, 2026

Expose per-request start timestamp (or hook) at BeginRequestProcessing in Kestrel

area-networkingIncludes servers, yarp, json patch, bedrock, websockets, http client factory, and http abstractionsIncludes servers, yarp, json patch, bedrock, websockets, http client factory, and http abstractions

feature-kestrel

feature-request

Status: Open.

#66336 In dotnet/aspnetcore;

· that-cod3r opened on Apr 16, 2026

CRITICAL BREAKING CHANGE in Microsoft.AspNetCore.DataProtection from 10.0.5 => 10.0.6

area-dataprotectionIncludes: DataProtectionIncludes: DataProtection

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

untriaged

Status: Open.

#66335 In dotnet/aspnetcore;

· nth-commit opened on Apr 16, 2026

Minimal API incorrectly returns 400 with antiforgery error message

area-minimalIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etcIncludes minimal APIs, endpoint filters, parameter binding, request delegate generator etc

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

feature-antiforgery

Status: Open.

#66329 In dotnet/aspnetcore;

· richardhauer opened on Apr 15, 2026

ScrollToItemAsync(int itemIndex) design for Virtualization

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

design-proposalThis issue represents a design proposal for a different issue, linked in the descriptionThis issue represents a design proposal for a different issue, linked in the description

feature-blazor-virtualizationThis issue is related to the Blazor Virtualize componentThis issue is related to the Blazor Virtualize component

feature-request

Status: Open.

Feature

#66328 In dotnet/aspnetcore;

· ilonatommy opened on Apr 15, 2026

·  

11.0-preview5

[Hot Reload with dotnet watch] Hot Reload does not instantly reflect changes when editing .razor file in Blazor WASM Standalone in .NET 11 preview 4

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

feature-hot-reloadThis issue is related to the Hot Reload feaatureThis issue is related to the Hot Reload feaature

investigate

Status: Open.

#66325 In dotnet/aspnetcore;

· Chakolito opened on Apr 15, 2026

[Blazor Hybrid] Consider guarding HandleComponentException when Renderer is Disposed

area-blazorIncludes: Blazor, Razor ComponentsIncludes: Blazor, Razor Components

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

investigate

Status: Open.

#66322 In dotnet/aspnetcore;

· ScarletKuro opened on Apr 15, 2026

·  

Backlog

ASP.NET Core Logging Integration File Not Found Exception

area-hostingIncludes HostingIncludes Hosting

bugThis issue describes a behavior which is not expected - a bug.This issue describes a behavior which is not expected - a bug.

Status: Open.

#66315 In dotnet/aspnetcore;

· bradleyables22 opened on Apr 14, 2026

Quarantine Http2ConnectionTests.AbortedStream_ResetsAndDrainsRequest_RefusesFramesAfterClientReset is flaky

test-failure

Status: Open.

#66309 In dotnet/aspnetcore;

· github-actions opened on Apr 14, 2026