# NousResearch/hermes-agent · Fix duplicate assistant reply rendering on desktop

## Open now

- Nothing open on GitHub.

A bug caused the desktop client to render the same assistant reply twice under certain streaming or backfill conditions. These changes address deduplication of interim deliveries, redelivered messages, and backfilled folds to prevent double rendering.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 2 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #120290. Verify it addresses your case.
- **Recommended:** read PR #120290 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-126625`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.40`: the share of member 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.

## Closed / duplicate issues

- #120104: \[Bug\]: Desktop renders the same assistant reply twice (duplicate render of a single response)

## Prior & competing PRs

- **#120290: Desktop no longer shows a reply twice when you switch back to a chat mid-stream**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `apps/desktop/src/app/session/hooks/use-session-actions/utils.test.ts`, `apps/desktop/src/app/session/hooks/use-session-actions/utils.ts`
- **#126625: fix(desktop): a redelivered interim or long final no longer renders twice**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `apps/desktop/src/app/session/hooks/use-message-stream/duplicate-delivery-120104.test.tsx`, `apps/desktop/src/app/session/hooks/use-message-stream/index.ts`, `apps/desktop/src/app/session/hooks/use-message-stream/interim-redelivery.test.tsx`, `apps/desktop/src/app/session/hooks/use-message-stream/interim-sealing.test.tsx`
- **#120145: fix(desktop): collapse duplicate interim delivery into one bubble**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#93962`, `#120290`
- **#124472: fix(desktop): dedupe backfilled folds by final-reply part row**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `274117bd4c5e`, `f9829a4887e6`, `11d5eb81a3aa`, `#123801`

## Fix status

- Merged to main in PR #120290 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-28`.
- Subsystem: `apps/desktop`