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Thread-safety bug: LogBufferingFilterRuleSelector.Select races with InvalidateCache, causing InvalidOperationException - Collection was modified; enumeration operation may not execute

area-telemetry

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.

#7383 In dotnet/extensions;

· Sorttech opened on Mar 10, 2026

Tool search and deferred loading

area-aiMicrosoft.Extensions.AI librariesMicrosoft.Extensions.AI libraries

untriaged

Status: Open.

#7371 In dotnet/extensions;

· kzu opened on Mar 7, 2026

Microsoft.Extensions.DataIngestion.Writers.Tests.SqliteVectorStoreWriterTests.IncrementalIngestion_WithManyRecords_DeletesAllPreExistingChunks hang

needs-area-label

untriaged

Status: Open.

#7359 In dotnet/extensions;

· ericstj opened on Mar 6, 2026

Sending message in chat throws exception (GetStreamingResponseAsync)

area-aiMicrosoft.Extensions.AI librariesMicrosoft.Extensions.AI libraries

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.

#7350 In dotnet/extensions;

· ntark opened on Mar 1, 2026

[API Proposal]: Async (Long-Running) Function Tool Support

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

area-aiMicrosoft.Extensions.AI librariesMicrosoft.Extensions.AI libraries

waiting-author-feedback 📭The 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.

#7344 In dotnet/extensions;

· saikir1994 opened on Feb 27, 2026

Update evaluator prompts to work with newer models since GPT-4o is slated for retirement.

area-ai-evalMicrosoft.Extensions.AI.Evaluation and relatedMicrosoft.Extensions.AI.Evaluation and related

untriaged

Status: Open.

#7341 In dotnet/extensions;

· CHR-LeeOlsen opened on Feb 25, 2026

[API Proposal]: SummarizingChatReducer to be promoted as stable

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

area-fundamentals

untriaged

Status: Open.

#7335 In dotnet/extensions;

· mdesalvo opened on Feb 23, 2026

MemoryCache Docs Missing Details

area-aiMicrosoft.Extensions.AI librariesMicrosoft.Extensions.AI libraries

untriaged

Status: Open.

#7323 In dotnet/extensions;

· tomwarner13 opened on Feb 19, 2026

[MEDI] SemanticSimilarityChunker raising OllamaSharp.Models.Exceptions.OllamaException: the input length exceeds the context length

area-ai-templatesMicrosoft.Extensions.AI.TemplatesMicrosoft.Extensions.AI.Templates

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.

#7297 In dotnet/extensions;

· quicoli opened on Feb 13, 2026

Interface for counting tokens

area-aiMicrosoft.Extensions.AI librariesMicrosoft.Extensions.AI libraries

untriaged

Status: Open.

#7290 In dotnet/extensions;

· stephentoub opened on Feb 12, 2026

[API Proposal]: Optional tags for metric source generation

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

area-telemetry

untriaged

Status: Open.

#7265 In dotnet/extensions;

· AndreReise opened on Feb 4, 2026

DataContent stores Data as a UTF-16 URI string, a format not used by consumers or wire

area-aiMicrosoft.Extensions.AI librariesMicrosoft.Extensions.AI libraries

untriaged

Status: Open.

#7257 In dotnet/extensions;

· ericstj opened on Feb 3, 2026