# NousResearch/hermes-agent · Desktop hover triggering excessive backend pre-warming

## Open now

- Nothing open on GitHub.

These items concern a bug where hovering over the profile rail in the desktop app caused backends to be pre-warmed for every profile without pointer movement, leading to high memory churn and exceeding backend caps. The cluster covers the problem report, a fix, and a related salvage change.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #117068. Verify it addresses your case.
- **Recommended:** read PR #117068 (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-117068`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.67`: 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

- #100548: Desktop hover-prewarm cascades through the entire profile fleet with no user input — ~750 MB/min RAM churn, 19 backends vs cap of 3

## Prior & competing PRs

- **#117068: Desktop: hovering the profile rail without moving the pointer no longer pre-warms a backend for every profile (#100548, salvage #100588)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `apps/desktop/src/app/chat/sidebar/profile-dropdown-switcher.tsx`, `apps/desktop/src/app/chat/sidebar/profile-rail-connect.test.tsx`, `apps/desktop/src/app/chat/sidebar/profile-rail-fleet.test.tsx`, `apps/desktop/src/app/chat/sidebar/profile-switcher.tsx`, `apps/desktop/src/app/chat/sidebar/session-row.test.tsx`, `apps/desktop/src/app/chat/sidebar/session-row.tsx`, `apps/desktop/src/app/chat/sidebar/use-profile-prewarm.test.ts`, `apps/desktop/src/app/chat/sidebar/use-profile-prewarm.ts`
- **#100588: fix(desktop): stop fleet-wide hover-prewarm without pointer movement**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `1ec61e4df2`, `#117068`, `#100548`

## Fix status

- Merged to main in PR #117068 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-20`.