paperclip/ui
Doyeon Baek 4965dc834a
fix(ui): don't window-scroll the desktop shell on comment submit (#7972) (#8041)
Fixes #7972.

## Thinking Path
- The reporter pinned the post-submit composer-viewport restore in
`ui/src/lib/issue-chat-scroll.ts`, which falls back to
`window.scrollBy(...)` when `#main-content` is not independently
scrollable — exactly the short-thread repro case.
- In the desktop shell the body is `overflow: hidden` (set in
`Layout.tsx`) inside a fixed-height `h-dvh` flex column, so a window
scroll never moves content: it translates the entire shell (sidebar
included) off-screen, and a plain reload does not restore it. On mobile
(`min-h-dvh`, `body { overflow: visible }`) and the auth-free perf
fixture the page genuinely scrolls, so the window IS the correct target
there.
- A prior attempt forced `resolveIssueChatScrollTarget` to always use
`#main-content`; that path is a no-op on a non-overflowing container and
is sensitive to a stale `ui/dist`/`.vite` cache, which likely masked the
result. Gating the window-scroll itself is the precise root-cause fix
and covers both restore call sites (`queueViewportRestore` and the
`[messages]` layout effect) since both route through one function.

## What Changed
- Added `isWindowScrollable(doc, win)` to `issue-chat-scroll.ts`: the
window is a valid scroll target only when the document body is not
clipped. It checks both the `overflow` shorthand and the `overflow-y`
longhand (some engines, incl. jsdom, do not derive the longhand from the
shorthand in computed style).
- Gated the `window.scrollBy` fallback in
`restoreComposerViewportSnapshot` behind `isWindowScrollable`; on the
desktop shell there is nothing to restore, so the scroll position is
left untouched.
- Added unit tests for the desktop-shell (no window scroll) case and for
`isWindowScrollable`.

## Verification
- `ui $ vitest run src/lib/issue-chat-scroll.test.ts` → 6 passed (2 new
+ existing window/element restore tests still green).
- `ui $ vitest run src/components/IssueChatThread.test.tsx` → 55 passed
(consumer regression).

## Risks
- Low. Behaviour only changes when the resolved target is `window` AND
the document body is clipped — i.e. the desktop shell, where the
previous behaviour was the bug. Mobile and the perf fixture keep window
scrolling unchanged (body not clipped → `isWindowScrollable` true).

## Model Used
claude-opus-4-8

---

- [x] I searched the GitHub PRs for similar or duplicate PRs and
confirmed this is not a duplicate.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-12 10:05:57 -07:00
..
public feat(ui): NUX rework behind enableConferenceRoomChat experimental flag — capsule onboarding, conference-room chat, unified composer (#8000) 2026-06-11 16:32:55 -05:00
src fix(ui): don't window-scroll the desktop shell on comment submit (#7972) (#8041) 2026-06-12 10:05:57 -07:00
storybook Build the Skills Store (#7990) 2026-06-11 14:02:09 -05:00
README.md [codex] add comprehensive UI Storybook coverage (#4132) 2026-04-20 12:13:23 -05:00
components.json Overhaul UI with shadcn components and new pages 2026-02-17 09:07:32 -06:00
index.html [codex] Polish board UI mobile flows (#6550) 2026-05-22 10:13:47 -05:00
package.json build(deps-dev): bump tailwindcss from 4.1.18 to 4.3.0 (#7574) 2026-06-06 23:33:37 -07:00
tsconfig.json [codex] add comprehensive UI Storybook coverage (#4132) 2026-04-20 12:13:23 -05:00
vite.config.ts [codex] fix worktree dev dependency ergonomics (#3743) 2026-04-15 09:47:29 -05:00
vitest.config.ts Add sandbox environment support (#4415) 2026-04-24 12:15:53 -07:00
vitest.setup.ts feat(ui): NUX rework behind enableConferenceRoomChat experimental flag — capsule onboarding, conference-room chat, unified composer (#8000) 2026-06-11 16:32:55 -05:00

README.md

@paperclipai/ui

Published static assets for the Paperclip board UI.

What gets published

The npm package contains the production build under dist/. It does not ship the UI source tree or workspace-only dependencies.

Storybook

Storybook config, stories, and fixtures live under ui/storybook/.

pnpm --filter @paperclipai/ui storybook
pnpm --filter @paperclipai/ui build-storybook

Typical use

Install the package, then serve or copy the built files from node_modules/@paperclipai/ui/dist.