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Context compaction loses CLAUDE.md guidelines #19736

Closed as duplicate
Closed as duplicate
Context compaction loses CLAUDE.md guidelines#19736
Labels
area:corebugSomething isn't workinghas reproHas detailed reproduction stepsmemoryplatform:windowsIssue specifically occurs on Windows

Description

@orlinkata
orlinkata
opened on Jan 21, 2026

Description

After conversation compaction (when context runs out and gets summarized), Claude loses project-specific instructions from CLAUDE.md.

Observed Behavior

After compaction, Claude forgot:

  1. Co-Authored-By should NOT be added to commits (project rule in CLAUDE.md)
  2. Output for Azure DevOps must be in Markdown format

The compaction summary captured the task progress but lost the behavioral rules from CLAUDE.md.

Expected Behavior

CLAUDE.md guidelines should be preserved across compaction, either by:

  • Including key CLAUDE.md rules in the compaction summary
  • Re-reading CLAUDE.md after compaction
  • Flagging critical rules separately from conversation history

Environment

  • Claude Code CLI
  • Windows 11
  • Git Bash terminal

Activity

  1. github-actions
    added
    bugSomething isn't working
    has reproHas detailed reproduction steps
    platform:windowsIssue specifically occurs on Windows
    area:core
    memory
    on Jan 21, 2026

  2. github-actions commented on Jan 21, 2026

    @github-actions
    github-actionsBot
    on Jan 21, 2026 – with GitHub Actions

    Found 3 possible duplicate issues:

    1. [BUG] Claude forgets everything in CLAUDE.md after compaction #6354
    2. [BUG] CLAUDE.md instructions completely ignored after context compaction #19471
    3. [🤖 Sonnet 4.5] CLAUDE.md explicit "no auto-commit" rule violated when session resumed from context summary #12068

    This issue will be automatically closed as a duplicate in 3 days.

    • If your issue is a duplicate, please close it and 👍 the existing issue instead
    • To prevent auto-closure, add a comment or 👎 this comment

    🤖 Generated with Claude Code

  3. orlinkata
    closed this as a duplicateof [BUG] Claude forgets everything in CLAUDE.md after compaction #6354 on Jan 23, 2026

  4. github-actions commented on Jan 30, 2026

    @github-actions
    github-actionsBot
    on Jan 30, 2026 – with GitHub Actions

    This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.

  5. github-actions
    locked as resolved and limited conversation to collaborators on Jan 30, 2026
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