Issues

• With a TimeoutPolicy on a node and step_timeout on the graph it runs, resuming after a sibling's failure makes that graph return before its Send fan-out ran

  bugexternal
  Bug

  langchain-ai/langgraph#9484 · Filter by author yifanxiong272 opened on Oct 29, 2026
  2

• JsonPlusSerializer: pydantic RootModel state loses its type on checkpoint round trip and breaks interrupt/resume

  external
  langchain-ai/langgraph#9480 · Filter by author vastStage opened on Oct 28, 2026
  2

• A subgraph node with a RetryPolicy asks again after a failed attempt, but the resumed run continues the failed attempt and discards the new answer

  bugexternal
  Bug

  langchain-ai/langgraph#9478 · Filter by author yifanxiong272 opened on Oct 28, 2026
  1

• Agent Server: a custom http.app empties the built-in operations in /openapi.json

  external
  langchain-ai/langgraph#9476 · Filter by author itsklimov opened on Oct 28, 2026

• Functional API: resume re-runs a @task whose exception the entrypoint caught, but replays the tasks that ran after it

  bugexternal
  Bug

  langchain-ai/langgraph#9475 · Filter by author roydonsequeira opened on Oct 28, 2026
  4

• checkpoint: Redis cache tests flush unrelated data from local databases

  external
  langchain-ai/langgraph#9474 · Filter by author RAMZI0TO99 opened on Oct 28, 2026

• cli: deployment archives omit uv workspaces outside the config directory

  external
  langchain-ai/langgraph#9473 · Filter by author RAMZI0TO99 opened on Oct 28, 2026

• sdk-py: async protocol SSE accepts HTML responses as successful empty streams

  external
  langchain-ai/langgraph#9472 · Filter by author RAMZI0TO99 opened on Oct 28, 2026

• sdk-py: WebSocket cookie selection drops base URL path prefixes

  external
  langchain-ai/langgraph#9471 · Filter by author RAMZI0TO99 opened on Oct 28, 2026

• checkpoint: AES checkpoints with non-default mac_len cannot be read back

  external
  langchain-ai/langgraph#9470 · Filter by author RAMZI0TO99 opened on Oct 28, 2026

• sdk-py: WebSocket streams omit client API-key and Authorization headers

  external
  langchain-ai/langgraph#9469 · Filter by author RAMZI0TO99 opened on Oct 28, 2026

• bug: Overwrite is not unwrapped when it is the first value of an empty BinOp channel (Optional/Union/Literal types)

  external
  langchain-ai/langgraph#9467 · Filter by author lisry-1 opened on Oct 28, 2026
  1

• Dead redirect target for /how-tos/autogen-integration

  bugexternal
  Bug

  langchain-ai/langgraph#9466 · Filter by author minminpeng opened on Oct 28, 2026
  1

• langgraph-checkpoint-conformance reports FULL (0/0) for a checkpointer that implements no capabilities

  external
  langchain-ai/langgraph#9465 · Filter by author 2SinceJuly opened on Oct 28, 2026
  1

• v3 GraphRunStream.interleave() drops items emitted during transformer.finalize()

  external
  langchain-ai/langgraph#9461 · Filter by author yang0228 opened on Oct 27, 2026

• [BUG] keep_latest prune raises NotImplementedError for DeltaChannel threads

  external
  langchain-ai/langgraph#9438 · Filter by author Aditi0004 opened on Oct 26, 2026
  1

• defer=True node runs while a Send chain is still in flight (and then runs a second time)

  external
  langchain-ai/langgraph#9434 · Filter by author napetrov opened on Oct 26, 2026
  2

• langgraph dockerfile writes \r\r\n line endings on Windows (os.linesep in langgraph_cli/config.py)

  external
  langchain-ai/langgraph#9430 · Filter by author Sonica-B opened on Oct 25, 2026
  2

• Proposal: deterministic tool-call validator as a middleware hook (independent of model alignment)

  external
  langchain-ai/langgraph#9428 · Filter by author PHM-Audit opened on Oct 25, 2026
  5

• docs: explicit host-selected clients for background graph work

  external
  langchain-ai/langgraph#9419 · Filter by author midhatn opened on Oct 24, 2026

• langgraph.json: validate_config accepts malformed auth/encryption/priority/http/checkpointer sections, and a non-string path raises a bare TypeError

  external
  langchain-ai/langgraph#9414 · Filter by author Owen-Richards opened on Oct 23, 2026
  2

• JsonPlusSerializer: msgpack encode of dataclass-heavy values spends most of its time in isinstance(obj, SendProtocol) on Python 3.11

  external
  langchain-ai/langgraph#9410 · Filter by author todor-a opened on Oct 23, 2026
  2

• test: unskip test_nested_tracing — it fails on LangSmith multipart parsing, not a CI timeout

  external
  langchain-ai/langgraph#9405 · Filter by author BistaDinesh03 opened on Oct 23, 2026
  1

• langgraph-checkpoint-sqlite: The test test_delta_channel_conformance fails: ValueError: 'delta_channel_history' is not a valid Capability

  bugexternal
  Bug

  langchain-ai/langgraph#9404 · Filter by author yurivict opened on Oct 23, 2026
  1

• durability="exit": a node still running when its sibling fails finishes, but its writes are not saved, so resuming runs it again

  bugexternal
  Bug

  langchain-ai/langgraph#9397 · Filter by author yifanxiong272 opened on Oct 22, 2026
  4