NousResearch/hermes-agent

Message reactions failing after session compression

Cluster 108633. Data as of

Nothing open on GitHub. Fix merged in #115321 on 18 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #115321. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
Nothing open on GitHub.

These items concern a bug where reacting to messages fails after auto-compression rotates or changes the session ID, and efforts to fix reaction lookup across the compression lineage.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #115321 Desktop: reacting to a pre-compaction message no longer fails with 4040 (#80670, salvage #95833 + #108542)

    merged to main

    files: apps/desktop/src/store/reactions.ts, contributors/emails/[redacted:email], hermes_state_messages.py, tests/agent/test_message_reactions.py, tests/hermes_state/test_compacted_message_reactions.py

1 PR closed without merging

From the close comments: superseded by another PR 1

  • #108635 fix: resolve reactions across compression lineage · superseded by another PR → #115321, #108633, #80670
Closed issues · 1
  • Closed#108633message.react fails with 'message not found in this session' after auto-compression rotates the session id
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

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At a glance

Merged PRs
#115321
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
18 Sep 2026

For your agent

The same facts, typed.