The sync-frame guards (_fixMobileScrollJank / _suppressBrowserOverflowAnchor)
only cover the render frame itself. postProcessRenderedMessages() — syntax
highlight, inline diff/csv/pdf/html/excalidraw, katex/mermaid — is scheduled a
FRAME LATER via requestAnimationFrame(), after those guards have released. Each
of those can change the height of rows ABOVE the viewport; on mobile
(overflow-anchor:auto) the browser's native anchor engine then compensates
scrollTop a SECOND time in that unguarded frame, yanking an unpinned reader to
another turn (the residual mobile 往回大跳).
Wrap all three deferred post-process dispatches (fast-path cache branch, main
render tail, live-tool remount) in _postProcessWithAnchorSuppression(), which
routes through the shared _suppressBrowserOverflowAnchor() and holds suppression
one extra frame so late media/layout reflow is covered too. Desktop rests at
overflow-anchor:none so the wrapper is a verified no-op there.
Reproduced on an isolated debug instance with a cloned 1179-message session:
above-viewport +350px during the async settle window jumped scrollTop +350 on
mobile (auto) and 0 with the wrapper; desktop (none) 0 both ways. static/ui.js
only.
Root cause (mobile-only, never reproduces on desktop): .messages CSS resting
overflow-anchor is 'auto' on touch devices but 'none' on hover+fine-pointer
desktops (style.css media query). When _restoreMessageViewportAnchor writes
scrollTop to realign the reader's anchor row AND content height above the
viewport changed in the same frame, a mobile browser's native scroll-anchoring
ALSO shifts scrollTop -- the two compensations stack and yank the reader to an
unrelated earlier turn. Desktop never has the browser layer, which is why this
reproduced only on phones.
Fix: _suppressBrowserOverflowAnchor() sets overflow-anchor:none for the JS
scrollTop write, releases (restores prior value) next frame. Engages ONLY when
computed value is 'auto' (mobile) -- pure no-op on desktop (already none).
Verified on isolated debug instance (mobile-viewport Playwright):
- mobile auto: 800px above-viewport growth compensation 800px -> 0 (browser layer suppressed)
- desktop none: helper returns null, inline value untouched (byte-identical behavior)
- streaming: real turn, mid-read follow, 0 jumps, content held
- scroll-regression suite green
/api/clarify/pending always returns HTTP 200 when present (returns
{"pending": null} for an unknown session — it never 404s). The front-end
clarify poller warned "Clarify endpoint unavailable. Please restart
server." on ANY caught error whose message merely contained "404" or
"not found", so an unrelated stale-session 404 ("Session not found", e.g.
an old-profile session polling briefly after a profile switch) or a
transient error produced a misleading missing-endpoint toast that pointed
operators at the wrong layer.
Clarify polling now branches on the structured HTTP status that api()
attaches to the thrown Error (err.status):
- 404 "Session not found" -> handled as a stale-session poll (stop + hide
card silently), no toast;
- restart-server warning fires only on a genuine route-not-found 404 whose
body is NOT session-scoped;
- poll failures are logged with path, status, polling session id, and
current session id for diagnosis.
Interrupt provenance: cancelStream()/cancelSessionStream() now log a
'[stream] cancel requested' line with the trigger reason
(composer-stop / slash-stop / slash-interrupt / busy-interrupt /
sidebar-stop). Passive UI lifecycle events (session switch, tab hide, page
unload) already tear down only the local SSE transport via
closeLiveStream() and never call /api/chat/cancel — only explicit
Stop/interrupt paths interrupt the backend agent/tool run. This is
confirmed by test_clarify_pending_never_404s locking the handler shape.
Supersedes #5343 (which handled only the profile-switch sub-case and kept
the broad message-scrape). Adds tests/test_issue5345_*.py (9 tests).
Co-authored-by: claw-io <claw-io@users.noreply.github.com>
Co-authored-by: ruizanthony <ruizanthony@users.noreply.github.com>
Opt live assistant streaming nodes out of the global theme color/background transitions so token-by-token markdown updates do not flash or fade on light themes.
Adds a targeted regression test in test_smooth_text_fade.py while keeping the opt-in smooth text fade feature intact.
#5306 (flicker): while a parent WebUI session is the active/streaming session,
a linked delegate subagent child that transiently reports message_count===0
between /api/sessions polls was dropped by _sidebarRowHasVisibleMessages BEFORE
_attachChildSessionsToSidebarRows could stack it under its parent. It never
entered sessionsRaw, so the row vanished, then reappeared on the next refresh
once its list metadata caught up — the flicker. Extend the visibility predicate
with an active-parent exception (mirroring the existing active-session
exception): a child_session whose parent_session_id is the active sidebar
session stays visible even at message_count 0. Scoped to the active parent so
truly-empty unrelated sessions are still hidden.
#5305 (orphan): a delegated subagent child whose WebUI parent is filtered out of
the current render (project/profile/source scope) was promoted to a contextless
top-level "Subagent Session" orphan. Suppress cross-surface child_session rows
whose parent row is absent from the render instead of orphaning them, mirroring
the existing archived-hidden-parent suppression (#4293). The genuinely-external
parent case (messaging/CLI) still orphans via the parentIsExternal branch.
Tests: tests/test_5306_subagent_sidebar_flicker.py (7 tests) locks both
invariants and the no-regression guards, executing the real sessions.js helper
regions under node like the existing lineage tests.
Reapply footer control ordering on current upstream/master while preserving the required situational chip renderer. Persist composer_control_order with backend validation, keep the settings descriptions reorder-aware, and make primary/situational chip renderers participate in same-group drag ordering.
Verified with: node --check static/boot.js; node --check static/panels.js; git diff --check; ./scripts/test.sh tests/test_issue4598_composer_control_visibility.py
