LangChain users keep filing bugs

LLM apps4 posts from 4 people3d active+22 posts in the last 7 days, 2 the 7 days before (steady)

Posts per day4 posts, Sep 16 to Sep 25

The posts behind it

4, newest first

Post	Where	Date
langchain-typesafe: TypeSafeClassifier declares serialization support but cannot round-trip through built-in deserialization...declares serialization support. After normal secret handling is configured, one workaround is to supply both a custom import mapping and `valid_namespaces=["langchain_typesafe"]`. ### Compatibility and possible resolution The current serialized ID should remain deserializable...langchain-ai/langchainChampionsZhang	langchain-ai/langchainChampionsZhang1 replies	Sep 24yesterday
MCP Apps (SEP-1865): first-class support for hosts that render a server's UI## Summary [MCP Apps (SEP-1865)](https://github.com/modelcontextprotocol/modelcontextprotocol/blob/main/docs/specification/draft/sep-1865.md) lets an MCP server return a user interface instead of text. A tool declares a `ui://` resource; the host renders it in a sandboxed...langchain-ai/langchainjosiahcoad-langchain	langchain-ai/langchainjosiahcoad-langchain1 replies	Sep 24yesterday
ntegration: memory transfer store for LangChain/LangMem export and import verified agent memory### Submission checklist - [x] This is a feature request, not a bug report or usage question. - [x] I added a clear and descriptive title that summarizes the feature request. - [x] I used the GitHub search to find a similar feature request and didn't find it. - [x] I checked the...langchain-ai/langchainKaushalt2004	langchain-ai/langchainKaushalt20041 replies	Sep 187 days ago
langchain 1.4.0: any after_model middleware using documented `jump_to="tools"` bypasses the HITL pending_tool_calls gate and re-executes rejected tool calls### Submission checklist - [x] This is a bug, not a usage question. - [x] I added a clear and descriptive title that summarizes this issue. - [x] I used the GitHub search to find a similar question and didn't find it. - [x] I am sure that this is a bug in LangChain rather than...langchain-ai/langchainTardfyou	langchain-ai/langchainTardfyou8 replies	Sep 169 days ago

Companies and products named

Company or product	Posts naming it
LangChain	4
OpenAI	3
Perplexity	3
DeepSeek	3
Ollama	3
Anthropic	2

About this problem

Evidence

4 posts from 4 people in 1 place, about 2 a week over 9 days. Mostly on langchain-ai/langchain. Tools named alongside: OpenAI, Perplexity, DeepSeek, Ollama.

Frustration Frustration 0 of 3· Seen on GitHub issues

How it was grouped

Posts about LangChain that state a pain but match no known issue yet. First post Sep 16, 2026, latest Sep 24, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method

Posts per day

The posts behind it

Companies and products named

Rising problems by email