Issues

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

  external
  langchain-ai/langgraph#9282 · Filter by author irulappan151204 opened on Oct 12, 2026

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

  bugexternal
  Bug

  langchain-ai/langgraph#9280 · Filter by author yifanxiong272 opened on Oct 12, 2026
  2

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

  external
  langchain-ai/langgraph#9277 · Filter by author harish-gaggar opened on Oct 11, 2026
  2

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

  bugexternal
  Bug

  langchain-ai/langgraph#9276 · Filter by author yifanxiong272 opened on Oct 11, 2026
  1

• update_state fails with missing checkpoint_ns when addressed by checkpoint_id

  external
  langchain-ai/langgraph#9271 · Filter by author Timotty opened on Oct 10, 2026
  3

• DeltaChannel: _checkpointer_put_after_previous can deadlock the BackgroundExecutor pool (order inversion on _delta_write_futs)

  external
  langchain-ai/langgraph#9270 · Filter by author vins13pattar opened on Oct 10, 2026
  1

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

  external
  langchain-ai/langgraph#9267 · Filter by author Ayush-e4 opened on Oct 9, 2026
  2

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

  external
  langchain-ai/langgraph#9266 · Filter by author manobhisriram opened on Oct 9, 2026
  1

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

  external
  langchain-ai/langgraph#9255 · Filter by author moneebullah25 opened on Oct 9, 2026
  3

• Compatible api_version ranges reject untagged base images with registry ports

  external
  langchain-ai/langgraph#9254 · Filter by author bnkaiteam opened on Oct 9, 2026
  1

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

  bugexternal
  Bug

  langchain-ai/langgraph#9253 · Filter by author patrickmao1 opened on Oct 9, 2026
  4

• Feature Request: Compensatory Rollback Journals & Blast-Radius Containment for ToolNode

  external
  langchain-ai/langgraph#9250 · Filter by author AAH20 opened on Oct 8, 2026
  2

• With the default durability="async", one failed checkpoint save permanently drops a state value from the thread

  bugexternal
  Bug

  langchain-ai/langgraph#9245 · Filter by author patrickmao1 opened on Oct 8, 2026
  2

• Same-named local packages collide in generated Dockerfiles and runtime paths

  external
  langchain-ai/langgraph#9242 · Filter by author bnkaiteam opened on Oct 8, 2026
  1

• Synchronous SSE errors leave responses open and exhaust the HTTP connection pool

  external
  langchain-ai/langgraph#9241 · Filter by author bnkaiteam opened on Oct 8, 2026
  2

• Clarify that durability modes do not imply exactly-once external side effects

  external
  langchain-ai/langgraph#9240 · Filter by author hippoley opened on Oct 8, 2026
  2

• SqliteSaver.list() blocks checkpoint writes while synchronous history iteration is paused

  external
  langchain-ai/langgraph#9234 · Filter by author suhasaitham22 opened on Oct 7, 2026
  1

• Python SDK reuses a cleared SSE Last-Event-ID on reconnect

  external
  langchain-ai/langgraph#9230 · Filter by author Tivonsico opened on Oct 7, 2026
  2

• Python SDK loses the first SSE event type when the stream starts with a UTF-8 BOM

  external
  langchain-ai/langgraph#9225 · Filter by author Ra1nhy opened on Oct 7, 2026
  5

• error_handler: a handled failure is still re-raised when the failing node shares its superstep with another node

  bugexternal
  Bug

  langchain-ai/langgraph#9218 · Filter by author yedlurisrinu opened on Oct 6, 2026
  1

• Documentation examples: invalid Agent Inbox response branch and undefined SDK cache TTL reference

  external
  langchain-ai/langgraph#9216 · Filter by author Ayushdevo opened on Oct 6, 2026
  3

• error_handler type rejects handlers that take the injected error: NodeError parameter

  external
  langchain-ai/langgraph#9212 · Filter by author mohamed-abdo opened on Oct 6, 2026
  2

• sdk-py: sync thread stream gives a "gate timeout" error instead of the real error when run.start fails

  bugexternal
  Bug

  langchain-ai/langgraph#9209 · Filter by author patrickmao1 opened on Oct 5, 2026
  1

• Sync threads.stream() ignores run_start_timeout

  bugexternal
  Bug

  langchain-ai/langgraph#9208 · Filter by author patrickmao1 opened on Oct 5, 2026
  1

• error_handler can silently swallow a later unhandled exception after Python reuses its object id

  bugexternal
  Bug

  langchain-ai/langgraph#9207 · Filter by author yifanxiong272 opened on Oct 5, 2026
  2