Issues

• # Bug report: dotnet ef migrations add generates incorrect RenameColumn for an [Owned]-discovered owned type the moment any of its properties is touched via OwnsOne()

  dotnet/efcore#39158 · Filter by author alexsosa2000 opened on Oct 3, 2026

• Microsoft.Data.Sqlite 10.0.11+ fails to load on RHEL 8 (GLIBC_2.33 not found)

  area-adonet-sqlitecustomer-reported
  dotnet/efcore#39148 · Filter by author timothycoleman opened on Oct 2, 2026
  1

• ToString() on an enum with a string value converter fails in projections on EF 11 ("No coercion operator is defined"), possible regression from #38156

  customer-reported
  dotnet/efcore#39146 · Filter by author jufa2401 opened on Oct 2, 2026

• Microsoft.Data.Sqlite: GetStream reads another row, or throws, when the INTEGER primary key is not the rowid

  dotnet/efcore#39139 · Filter by author Laurianti opened on Oct 1, 2026

• [dnceng-bot] Branch efcore/release/8.0 can't be merged to Azdo internal branch

  dotnet/efcore#39138 · Filter by author dotnet-mirroring opened on Oct 1, 2026

• Documentation/code mismatch: split-query buffering and BufferedDataReader

  customer-reported
  dotnet/efcore#39130 · Filter by author KyMback opened on Sep 30, 2026
  1

• FirstWithoutOrderByAndFilterWarning is not logged for First/FirstOrDefault on a collection navigation in a subquery

  dotnet/efcore#39129 · Filter by author SimonCropp opened on Sep 30, 2026
  2

• EF Core 12 release checklist

  Task

  dotnet/efcore#39121 · Filter by author AndriySvyryd opened on Sep 28, 2026 · 12.0.0
  

• Cosmos DB: DateTime serialization format causing errors in ordering and filtering

  area-jsoncustomer-reported
  Bug

  dotnet/efcore#39113 · Filter by author Henri-Wiechers opened on Sep 28, 2026 · Backlog
  4

• ArgumentOutOfRangeException from Update on a tracked entity after a complex collection whose elements have a nested complex collection gets shorter

  area-change-trackingarea-complex-types
  Bug

  dotnet/efcore#39073 · Filter by author icecactus opened on Sep 23, 2026 · 10.0.13
  

• Owned JSON collection navigation absent from the stored document materializes as null (owned counterpart of #38625)

  area-jsonarea-owned-entitiesarea-query
  Bug

  dotnet/efcore#39060 · Filter by author philcarbone opened on Sep 22, 2026 · Backlog
  1

• Support defaults for missing JSON members in ComplexProperty().ToJson() for schema evolution

  area-jsoncustomer-reported
  Feature

  dotnet/efcore#39018 · Filter by author valeriob opened on Sep 18, 2026 · Backlog
  4

• Cosmos multi-vector search

  area-cosmosarea-vector-search
  dotnet/efcore#39016 · Filter by author AndriySvyryd opened on Sep 18, 2026 · Backlog

• Cosmos/FTS stop words configuration support

  area-cosmos
  Feature

  dotnet/efcore#39015 · Filter by author AndriySvyryd opened on Sep 18, 2026 · Backlog

• Allow to pass-through MSBuild settings for dotnet ef migrations

  area-toolsneeds-design
  Feature

  dotnet/efcore#39011 · Filter by author AndriySvyryd opened on Sep 17, 2026 · Backlog

• Precompiled queries: no extensibility point for provider-defined query terminal methods (blocks NativeAOT for third-party providers)

  area-aotneeds-design
  Feature

  dotnet/efcore#38962 · Filter by author ncipollina opened on Sep 11, 2026 · 12.0.0
  

• EF10 Upgrade cause Regression in query times due to linq-translations

  area-perfarea-querycustomer-reportedregression
  Bug

  dotnet/efcore#38961 · Filter by author IIamaseconds opened on Sep 11, 2026 · 12.0.0
  3

• EF Core Tasks NativeAOT/precompiled-query generation fails for genuinely multi-targeted projects ($(TargetFramework) empty in _EFGenerateFilesBeforePublish)

  area-aotarea-tools
  Bug

  dotnet/efcore#38955 · Filter by author ncipollina opened on Sep 10, 2026 · 12.0.0
  

• Microsoft.EntityFrameworkCore.Specification.Tests 11.0 RC1 cannot be restored from NuGet.org because of non-public Microsoft.DotNet.XUnitV3Extensions dependency

  area-test
  dotnet/efcore#38952 · Filter by author ncipollina opened on Sep 10, 2026 · 11.0.0
  

• dotnet ef dbcontext optimize --precompile-queries does not pass $(Configuration) to MSBuildWorkspace, breaking non-default build configurations

  area-aotarea-tools
  Bug

  dotnet/efcore#38951 · Filter by author ncipollina opened on Sep 10, 2026 · 12.0.0
  

• GetDatabaseValues[Async] does not return ComplexCollection properties

  area-complex-typescustomer-reported
  Feature

  dotnet/efcore#38938 · Filter by author pinkfloydx33 opened on Sep 8, 2026 · 12.0.0
  1

  

• Add a generic IMaterializationInterceptor

  area-interceptionarea-perfcustomer-reported
  Feature

  dotnet/efcore#38936 · Filter by author AndriySvyryd opened on Sep 8, 2026 · Backlog
  

• Compiled query with a parameterized temporal point-in-time throws ArgumentException from ExpressionTreeFuncletizer

  area-compiled-queryarea-queryarea-temporal-tables
  Task

  dotnet/efcore#38851 · Filter by author buvinghausen opened on Aug 23, 2026 · Backlog

• Left join via SelectMany + DefaultIfEmpty returns null outer entity instead of just null inner

  area-querycustomer-reported
  Bug

  dotnet/efcore#38813 · Filter by author AlmightyLks opened on Aug 15, 2026 · 12.0.0
  2

  

• Microsoft.Data.Sqlite 10.0.11 breaks .NET Framework builds via SQLitePCLRaw.lib.e_sqlite3 2.1.12 missing win-arm native

  area-adonet-sqlite
  Task

  dotnet/efcore#38803 · Filter by author tschettler opened on Aug 13, 2026 · 10.0.13
  4