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Improve Blazor WebAssembly AOT: trimming, reflection, System.Text.Json, and third-party library support

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

NativeAOT

Status: Open.

#64802 In dotnet/aspnetcore;

· sardar97 opened on Dec 16, 2025

Perf regression: json_middleware, multiple_queries

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

Status: Open.

#64800 In dotnet/aspnetcore;

· pr-benchmarks opened on Dec 16, 2025

Perf improvement: fortunes_dapper, fortunes_dapper

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

Status: Open.

#64799 In dotnet/aspnetcore;

· pr-benchmarks opened on Dec 16, 2025

Microsoft.AspNetCore.OpenAPI v10 sets no <code>type</code> for components

area-mvcIncludes: MVC, Actions and Controllers, Localization, CORS, most templatesIncludes: MVC, Actions and Controllers, Localization, CORS, most templates

feature-openapi

Status: Open.

#64797 In dotnet/aspnetcore;

· cheesi opened on Dec 16, 2025

Inconsistent behavior when passing enum values in json body

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.

#64795 In dotnet/aspnetcore;

· tobilinde opened on Dec 16, 2025

Consider supporting <code>Label</code> in addition to <code>DisplayName</code>

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

Status: Open.

#64791 In dotnet/aspnetcore;

· ilonatommy opened on Dec 16, 2025

·  

Backlog

ASP.NET Core roadmap for .NET 11

roadmap

Status: Open.

Epic

#64787 In dotnet/aspnetcore;

· danroth27 opened on Dec 16, 2025

·  

11.0.0

ValidateNever attribute seems to be ignored

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

feature-validationIssues related to model validation in minimal and controller-based APIsIssues related to model validation in minimal and controller-based APIs

Status: Open.

#64785 In dotnet/aspnetcore;

· illunix opened on Dec 15, 2025

blazor big project: build perf downgrade

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

Needs: Author FeedbackThe author of this issue needs to respond in order for us to continue investigating this issue.The author of this issue needs to respond in order for us to continue investigating this issue.

Status: Open.

#64784 In dotnet/aspnetcore;

· AdmiralSnyder opened on Dec 15, 2025

Consider adding AsyncAPI to SignalR

area-signalrIncludes: SignalR clients and serversIncludes: SignalR clients and servers

Status: Open.

#64777 In dotnet/aspnetcore;

· paulomorgado opened on Dec 15, 2025

Regression: CSS isolation not applying all styles in Blazor Server .NET 10

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

Author: Migration Bot 🤖The issue was created by a issue mover bot. The author may not be the actual author.The issue was created by a issue mover bot. The author may not be the actual author.

Needs: Author FeedbackThe author of this issue needs to respond in order for us to continue investigating this issue.The author of this issue needs to respond in order for us to continue investigating this issue.

Needs: ReproIndicates that the team needs a repro project to continue the investigation on this issueIndicates that the team needs a repro project to continue the investigation on this issue

Status: Open.

#64776 In dotnet/aspnetcore;

· vsfeedback opened on Dec 15, 2025

Add Forbidden and Forbidden&lt;T&gt; HttpResults like Ok/NotFound/Conflict and others

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

Status: Open.

#64775 In dotnet/aspnetcore;

· ntark opened on Dec 15, 2025