fix(web): retain FlowChat anchors through delayed Virtuoso compensation - #1853
Merged
Conversation
- Replace the fixed element-anchor TTL with active and retained lifecycle phases. - Keep delayed Virtuoso compensation under viewport coordinator ownership. - Synchronize stream-end reservation changes with semantic anchor restoration. - Standardize tool-card collapse measurement on visible card roots. - Add FlowChat log analysis tooling, documentation, and regression tests.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Fix FlowChat viewport drops caused by delayed Virtuoso compensation and inaccurate tool-card height estimates.
Type and Areas
Type: Regression fix
Areas: Web UI, FlowChat scroll stability, diagnostics tooling, tests, docs
Motivation / Impact
Retained semantic anchors now survive delayed Virtuoso
scrollBycompensation instead of expiring after a fixed timeout. Tool-card collapse estimates use the visible card root rather than hidden inner scroll content, preventing excessive footer reservations and viewport instability.Verification
pnpm --dir src/web-ui run test:run src/flow_chat/components/modern/FlowChatViewportCoordinator.test.ts src/flow_chat/components/modern/VirtualMessageList.session-boundary.test.tsxpnpm run type-check:webgit diff --checkpassed.Reviewer Notes
The collapse intent TTL remains as a measurement-settlement fallback, but semantic element anchors now release only on user navigation, viewport ownership transfer, session reset, or DOM disconnection.
Checklist