c9c1cf21f0
# PR Draft: Fix sticky auto-scroll during streaming chat responses Fixes #308 ## Summary This change makes chat auto-scroll easier to escape while assistant output is still streaming. The goal is to stop the viewport from repeatedly pulling the user back toward the bottom once they begin scrolling upward to inspect earlier content. ## Why Before this change, streaming updates could keep reasserting bottom-follow behavior during active rendering. That made auto-scroll feel sticky and forced users to scroll repeatedly or forcefully just to review earlier parts of an in-progress response. The intended behavior is simpler: once the user scrolls upward to leave follow mode, the UI should respect that decision instead of fighting it during subsequent stream updates. ## What Changed 1. Removed render-time force-bottom behavior from the shared follow-scroll helper path. 2. Updated streamed reasoning output to restore scroll without forcing the viewport back to the bottom. 3. Updated streamed tool-call output to use the same non-forcing restore behavior. ## Scope Boundaries Included: - Sticky auto-scroll behavior during streamed chat output - Shared follow-scroll behavior used by streamed nested panes - Reasoning and tool-call streaming paths that reused the same forced follow behavior Not included: - A full rewrite of the virtualized message list follow model - Broader scroll UX changes outside the streaming follow/escape behavior - Unrelated UI or plugin configuration changes in the worktree ## Technical Notes The core problem was not basic auto-scroll itself, but a render-time path that could keep forcing bottom-follow behavior while new streamed content was arriving. That meant a user's attempt to scroll upward could be overridden repeatedly by subsequent stream updates, which is why the auto-scroll felt sticky. The fix removes that override and keeps render-time restoration dependent on the current follow state instead. ## Files Changed - `packages/ui/src/lib/follow-scroll.tsx` - `packages/ui/src/components/message-block.tsx` - `packages/ui/src/components/tool-call.tsx` ## Verification Performed: 1. Reproduced the sticky auto-scroll behavior with a long multi-line streaming response. 2. Verified that scrolling upward during streaming now disengages follow more naturally in the affected streamed panes. 3. Ran `npm run typecheck --workspace @codenomad/ui`. 4. Ran `npm run build --workspace @codenomad/ui`. Build note: - The UI typecheck passes. - The UI build succeeds. - The build still emits existing third-party and chunk-size warnings unrelated to this change. ## Risks and Follow-up 1. The broader scroll-follow model is still more heuristic-heavy than ideal, so there may be future follow-up work to simplify it further. 2. This PR intentionally applies the smallest targeted fix to the known snap-back path instead of rewriting the full chat scroll system. --------- Co-authored-by: Shantur Rathore <i@shantur.com>
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