fix(app): keep streamed chat position stable on Android

Ignore synthetic momentum-end events emitted after native anchor corrections. Only active user momentum may settle sticky-bottom intent.
2026-07-26 20:47:25 +02:00
parent e859d2df12
commit 72c7d3fe3e
1 changed files with 5 additions and 0 deletions
@@ -359,6 +359,11 @@ function NativeStreamViewport(props: StreamRenderInput & { strategy: StreamStrat

  const handleMomentumScrollEnd = useStableEvent(
    (event: NativeSyntheticEvent<NativeScrollEvent>) => {
+      // Android can emit momentum-end after a programmatic anchor correction.
+      // Only momentum that still owns the user gesture may settle scroll intent.
+      if (!isUserScrollActiveRef.current) {
+        return;
+      }
      const isNearBottom = isScrollEventNearBottom(event);
      clearPendingUserScrollEnd();
      isUserScrollActiveRef.current = false;