Observed Signal · Jun 24, 2026 · Technical Release · Source: DEV Community · Impact: 3/5 · Sentiment: Negative
Large Language Models (LLM) & AI Market: Claude Code Bug: Non‑Latin Paths Delete Conversations
A developer discovered that Claude Code’s local project path encoding strips every non‑Latin character and replaces it with hyphens, causing different directories with the same non‑Latin character count to collide into the same .claude/projects entry. Collisions let a user in one folder view or resume another folder’s chats and allow operations like `claude project purge` or default cleanup to delete unrelated conversations silently. The bug was reproduced across Chinese, Japanese, Korean and Arabic paths. The author published a GitHub issue against the Claude Code repository and released an open‑source scanner, ai-config-guard, that detects non‑Latin path collisions and other risky project instructions. The discovery and tool release were reported on June 24, 2026.
A bug in a major LLM developer tool (Claude Code) causes silent data collisions and potential loss of conversation history across non‑Latin directories; it affects developer workflows, data integrity and synchronization to claude.ai and is mitigated by a released detection tool and a filed GitHub issue.
Key Takeaways & Evidence Grounding
- Claude Code encodes project paths into .claude/projects by replacing every non‑Latin character with a hyphen.
- Different directory names with the same count of non‑Latin characters map to the same encoded project directory, causing collisions.
- `claude project purge` executed in one collided directory can delete sessions belonging to a different real directory.
- The issue was reproduced for Chinese, Japanese, Korean and Arabic directory names; all non‑Latin scripts are affected.
- The author published an open‑source scanner, ai-config-guard, and filed a GitHub issue at github.com/anthropics/claude-code/issues/70674.
Connected Companies & Entities
2 Entities mappedAnthropic
Foundation model company selling AI assistants and model APIs.
“GitHub Issue: https://github.com/anthropics/claude-code/issues/70674...”
claude.ai
AI developer offering assistants, coding tools and enterprise model APIs.
“`autoUploadSessions` syncing merged conversations from multiple projects to claude.ai...”
Ontology Mapping & Concepts
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