Commit 75e4ceb96489a2fe92c710c79dbea59778cccfd1 | the-knife

author	Dara Adedeji <76637177+SunkenInTime@users.noreply.github.com> 2026-09-09 17:34:39-04:00
committer	GitHub <noreply@github.com> 2026-09-09 14:34:39-07:00
log	75e4ceb96489a2fe92c710c79dbea59778cccfd1
tree	8454c5f41a90c84a608ff999ffad2e63b8ffa77e
parent	50f918c57a2df85bd97612b958386aaca035dcab
signature	Signed by PGP key B5690EEEBB952194

1 files changed, 9 insertions(+), 6 deletions(-)

apps/mobile/src/features/threads/ThreadFeed.tsx+9-6

 @@ -2866,13 +2866,16 @@ export const ThreadFeed = memo(function ThreadFeed(props: ThreadFeedProps) {
               entry.type === "message" ? `message:${entry.message.role}` : entry.type
             }
             getFixedItemSize={getFixedItemSize}
-            // LegendList swaps its position and size component types when this
+            // Android can retain stale native row positions when layout transitions
-            // becomes undefined, remounting the feed and replaying row entrances.
+            // race the measurements arriving during sync, even with duration 0.
-            // Keep those containers mounted while ordinary updates stay immediate.
+            // Keep its rows on LegendList's non-animated positioning path. On iOS,
+            // keep a transition installed between disclosures so containers don't remount.
             itemLayoutAnimation={
-              disclosureToggleSettling
+              Platform.OS === "android"
-                ? THREAD_FEED_LAYOUT_TRANSITION
+                ? undefined
-                : THREAD_FEED_IMMEDIATE_TRANSITION
+                : disclosureToggleSettling
+                  ? THREAD_FEED_LAYOUT_TRANSITION
+                  : THREAD_FEED_IMMEDIATE_TRANSITION
             }
             onItemSizeChanged={handleItemSizeChanged}
             // Measure rows well before they scroll into view so estimate→actual