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CachedPromptExecutor fails to serialize the prompt cache key when a message carries a CacheControl directive (Serializer for subclass 'Default' is not found in the polymorphic scope of 'CacheControl')

Status: Open.

#2145 In JetBrains/koog;

· Jordan Bergin (MrBergin) opened on Jun 18, 2026

Possible regression: singleRunStrategy terminates after first tool result when assistant message contains both text and tool calls

Status: Open.

#2127 In JetBrains/koog;

· Ramón Márquez (monrax) opened on Jun 9, 2026

ChatMemory doesn't keep track of Message.Assistant messages using nodeLLMRequestStreaming()

Status: Open.

#2126 In JetBrains/koog;

· 贺丰宝 (hefengbao) opened on Jun 9, 2026

Koog OpenAI-compat client drops Gemini 3 thought_signature → multi-turn tool calls fail

Status: Open.

#2113 In JetBrains/koog;

· Kaloyan Karaivanov (karloti) opened on Jun 5, 2026

[DeepSeek] Streaming tool call tool_call_id mismatch causes 400 error

Status: Open.

#2111 In JetBrains/koog;

· HaishiR opened on Jun 4, 2026

Gemini model does not support documents

Status: Open.

#2110 In JetBrains/koog;

· Cagdas Caglak (cagdasc) opened on Jun 3, 2026

SpringAiLLMClient.executeStreaming drops finishReason with stream-usage enabled

Status: Open.

#2109 In JetBrains/koog;

· Takuya Akamatsu (rea9r) opened on Jun 3, 2026

OllamaClient crash when use streaming strategy

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#2107 In JetBrains/koog;

· SingleKnife opened on Jun 3, 2026

StandardJsonSchemaGenerator generates incorrect schema for classes annotated with JsonClassDiscriminator

Status: Open.

#2105 In JetBrains/koog;

· Timothy Lusk (tlusk) opened on Jun 2, 2026

Support for Apple Foundation Models on iOS

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#2102 In JetBrains/koog;

· Ivan Magda (ivan-magda) opened on Jun 2, 2026

Update A2A to 1.0.0

Status: Open.

Feature

#2088 In JetBrains/koog;

· Andrey Bragin (EugeneTheDev) opened on May 29, 2026

Ollama chat response fails to deserialize with kotlinx.serialization mismatch

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#2084 In JetBrains/koog;

· Ricardo Simões (ricardojsimoes) opened on May 28, 2026