Issues

Server composes the custom-auth store filter with the client filter as a top-level `$and` no backend supports — search silently empty (InMemory/Postgres) or raises (SQLite); with a preset `$and`-valued field it returns rows that fail the auth condition

langchain-ai/langgraph#9342 · opened

on Oct 17, 2026

ToolNode error handlers with postponed union annotations raise AttributeError

langchain-ai/langgraph#9338 · opened

on Oct 17, 2026

1

SqliteStore and AsyncSqliteStore reset created_at when updating an existing item

langchain-ai/langgraph#9331 · opened

on Oct 16, 2026

1

create_react_agent formats the whole state into an unused error message on every model call

langchain-ai/langgraph#9328 · opened

on Oct 16, 2026

1

add_conditional_edges ignores the Literal return hint of a callable-class router, so the graph drawing loses the branch edges

langchain-ai/langgraph#9327 · opened

on Oct 16, 2026

2

add_messages skips merging, deletion and format= for messages after RemoveMessage(id=REMOVE_ALL_MESSAGES)

langchain-ai/langgraph#9326 · opened

on Oct 16, 2026

2

get_input_jsonschema() fails on the declared pydantic floor (>=2.7.4) for TypedDict states using Annotated[Required[...]] / Annotated[NotRequired[...]]; works from pydantic 2.11

langchain-ai/langgraph#9320 · opened

on Oct 15, 2026

3

Conditional router returning a non-`path_map` value raises a bare `KeyError` with no context

langchain-ai/langgraph#9319 · opened

on Oct 15, 2026

1

StateGraph ignores reducers wrapped in ReadOnly TypedDict qualifiers

langchain-ai/langgraph#9311 · opened

on Oct 14, 2026

Functional API with a cache: concurrent nested tasks fail with "dictionary changed size during iteration" in `match_cached_writes`

Bug

langchain-ai/langgraph#9304 · opened

on Oct 14, 2026

3

[sdk-py]: comment-only SSE heartbeats emit phantom events after an event ID

langchain-ai/langgraph#9299 · opened

on Oct 13, 2026

1

[prebuilt]: ToolRuntime docstring references nonexistent .write() method

Bug

langchain-ai/langgraph#9294 · opened

on Oct 13, 2026

2

Overwrite with a rejected message dict breaks a messages DeltaChannel thread

langchain-ai/langgraph#9292 · opened

on Oct 13, 2026

1

Failed update_state as input makes the next DeltaChannel input vanish

langchain-ai/langgraph#9291 · opened

on Oct 13, 2026

1

`@task` awaited inside a StateGraph node returns `None` under `astream_events` (node path; #4084 covered only the functional API)

langchain-ai/langgraph#9284 · opened

on Oct 12, 2026

4

Async SSE transport shutdown blocks or raises QueueFull when its event queue is full

langchain-ai/langgraph#9282 · opened

on Oct 12, 2026

2

Functional API deadlocks when a task waits on a child task and max_concurrency (or the thread pool) is exhausted

Bug

langchain-ai/langgraph#9280 · opened

on Oct 12, 2026

4

interrupt_after="node_one" pauses on a node named "no"

langchain-ai/langgraph#9277 · opened

on Oct 11, 2026

2

Resuming a compiled subgraph re-runs a node that already completed in the interrupted or failed super-step

Bug

langchain-ai/langgraph#9276 · opened

on Oct 11, 2026

5

update_state fails with missing checkpoint_ns when addressed by checkpoint_id

langchain-ai/langgraph#9271 · opened

on Oct 10, 2026

3

durability="sync" raises AttributeError "_put_checkpoint_fut" on a graph compiled without a checkpointer

langchain-ai/langgraph#9267 · opened

on Oct 9, 2026

3

PostgresStore: literal nested-dict filters raise `ValueError: Unsupported operator: <key>` (same root cause as #8786, which is scoped to SqliteStore only)

langchain-ai/langgraph#9266 · opened

on Oct 9, 2026

1

checkpoint: store/base/embed.py uses deprecated asyncio.iscoroutinefunction (DeprecationWarning on Python 3.14, removed in 3.16)

langchain-ai/langgraph#9255 · opened

on Oct 9, 2026

3

Compatible api_version ranges reject untagged base images with registry ports

langchain-ai/langgraph#9254 · opened

on Oct 9, 2026

2

`retry_policy` on a node that calls two subgraphs makes the second one resume into the first one's checkpoint

Bug

langchain-ai/langgraph#9253 · opened

on Oct 9, 2026

3

Navigation Menu

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Issues

Server composes the custom-auth store filter with the client filter as a top-level `$and` no backend supports — search silently empty (InMemory/Postgres) or raises (SQLite); with a preset `$and`-valued field it returns rows that fail the auth condition

ToolNode error handlers with postponed union annotations raise AttributeError

SqliteStore and AsyncSqliteStore reset created_at when updating an existing item

create_react_agent formats the whole state into an unused error message on every model call

add_conditional_edges ignores the Literal return hint of a callable-class router, so the graph drawing loses the branch edges

add_messages skips merging, deletion and format= for messages after RemoveMessage(id=REMOVE_ALL_MESSAGES)

get_input_jsonschema() fails on the declared pydantic floor (>=2.7.4) for TypedDict states using Annotated[Required[...]] / Annotated[NotRequired[...]]; works from pydantic 2.11

Conditional router returning a non-`path_map` value raises a bare `KeyError` with no context

StateGraph ignores reducers wrapped in ReadOnly TypedDict qualifiers

Functional API with a cache: concurrent nested tasks fail with "dictionary changed size during iteration" in `match_cached_writes`

[sdk-py]: comment-only SSE heartbeats emit phantom events after an event ID

[prebuilt]: ToolRuntime docstring references nonexistent .write() method

Overwrite with a rejected message dict breaks a messages DeltaChannel thread

Failed update_state as input makes the next DeltaChannel input vanish

`@task` awaited inside a StateGraph node returns `None` under `astream_events` (node path; #4084 covered only the functional API)

Async SSE transport shutdown blocks or raises QueueFull when its event queue is full

Functional API deadlocks when a task waits on a child task and max_concurrency (or the thread pool) is exhausted

interrupt_after="node_one" pauses on a node named "no"

Resuming a compiled subgraph re-runs a node that already completed in the interrupted or failed super-step

update_state fails with missing checkpoint_ns when addressed by checkpoint_id

durability="sync" raises AttributeError "_put_checkpoint_fut" on a graph compiled without a checkpointer

PostgresStore: literal nested-dict filters raise `ValueError: Unsupported operator: <key>` (same root cause as #8786, which is scoped to SqliteStore only)

checkpoint: store/base/embed.py uses deprecated asyncio.iscoroutinefunction (DeprecationWarning on Python 3.14, removed in 3.16)

Compatible api_version ranges reject untagged base images with registry ports

`retry_policy` on a node that calls two subgraphs makes the second one resume into the first one's checkpoint