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[WebToolsE2E] Blazor WebAssembly (Global) project: Page layout breaks after CSS changes and app restart.

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

Status: Open.

#65738 In dotnet/aspnetcore;

· v-elenafeng opened on Mar 11, 2026

Microsoft Security Advisory CVE-2026-26130 – .NET Denial of Service Vulnerability

needs-area-labelUsed by the dotnet-issue-labeler to label those issues which couldn't be triaged automaticallyUsed by the dotnet-issue-labeler to label those issues which couldn't be triaged automatically

Security

Status: Open.

#65727 In dotnet/aspnetcore;

· rbhanda opened on Mar 10, 2026

publishig .net 10 web assembly to azure app service

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

Status: Open.

#65726 In dotnet/aspnetcore;

· amithchavan24 opened on Mar 10, 2026

OpenAPI: Populate discriminator defaultMapping for non-abstract base types that include self JsonDerivedType

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.

#65724 In dotnet/aspnetcore;

· baywet opened on Mar 10, 2026

Add pre-generation OpenAPI hook in AddOpenApi options to initialize document metadata

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.

#65723 In dotnet/aspnetcore;

· baywet opened on Mar 10, 2026

[dnceng-bot] Branch aspnetcore/release/9.0 can't be merged to Azdo internal branch

area-infrastructureIncludes: MSBuild projects/targets, build scripts, CI, Installers and shared frameworkIncludes: MSBuild projects/targets, build scripts, CI, Installers and shared framework

Status: Open.

#65712 In dotnet/aspnetcore;

· dotnet-maestro-bot opened on Mar 9, 2026

Web Assembly Renderer Errors

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.

investigate

Status: Open.

#65711 In dotnet/aspnetcore;

· vsfeedback opened on Mar 9, 2026

·  

Backlog

Blazor WebAssembly fingerprint not replaced on publish

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: Attention 👋This issue needs the attention of a contributor, typically because the OP has provided an update.This issue needs the attention of a contributor, typically because the OP has provided an update.

Status: Open.

#65710 In dotnet/aspnetcore;

· vsfeedback opened on Mar 9, 2026

Extremely long build times with ASP.NET Core

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.

investigate

Status: Open.

#65709 In dotnet/aspnetcore;

· vsfeedback opened on Mar 9, 2026

·  

Backlog

[Known Build Error] TestServerTests.LongPollingWorks - ObjectDisposedException in OnDisconnectedAsync during shutdown

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

Known Build ErrorIssue that should show up in Build AnalysisIssue that should show up in Build Analysis

Status: Open.

#65702 In dotnet/aspnetcore;

· lewing opened on Mar 7, 2026

[Known Build Error] Blazor WASM template tests fail with NU1603: DevServer 10.0.6-ci not found, 10.0.6 resolved instead

area-infrastructureIncludes: MSBuild projects/targets, build scripts, CI, Installers and shared frameworkIncludes: MSBuild projects/targets, build scripts, CI, Installers and shared framework

Known Build ErrorIssue that should show up in Build AnalysisIssue that should show up in Build Analysis

Status: Open.

#65701 In dotnet/aspnetcore;

· lewing opened on Mar 7, 2026

Perf regression: fortunes_dapper, multiple_queries

area-perfPerformance infrastructure issuesPerformance infrastructure issues

perf-regression

Status: Open.

#65700 In dotnet/aspnetcore;

· pr-benchmarks opened on Mar 7, 2026