Fire VirtualizedList edge callbacks after programmatic scrolling (#58657) - #58657
Open
Abbondanzo wants to merge 1 commit into
Open
Abbondanzo wants to merge 1 commit into
Abbondanzo wants to merge 1 commit into
Conversation
meta-cla
Bot
added
the
CLA Signed
|
@Abbondanzo has exported this pull request. If you are a Meta employee, you can view the originating Diff in D100870075. |
Abbondanzo
added a commit
to Abbondanzo/react-native
that referenced
this pull request
Sep 24, 2026
…ct#58657) Summary: Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed. Recheck edge callbacks after post-scroll render updates. Track both content length and item count when an edge callback is sent so internal measurement changes cannot emit duplicates while the list remains at the same edge; scrolling away still re-arms the callback. Changelog: [General][Fixed] - Fire `VirtualizedList` edge callbacks after programmatic scrolling Differential Revision: D100870075
Abbondanzo
added a commit
to Abbondanzo/react-native
that referenced
this pull request
Sep 24, 2026
…ct#58657) Summary: Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed. Recheck edge callbacks after post-scroll render updates. Track both content length and item count when an edge callback is sent so internal measurement changes cannot emit duplicates while the list remains at the same edge; scrolling away still re-arms the callback. Changelog: [General][Fixed] - Fire `VirtualizedList` edge callbacks after programmatic scrolling Differential Revision: D100870075
Abbondanzo
force-pushed
the
export-D100870075
branch
3 times, most recently
from
September 24, 2026 20:42
3483d5a to
00b53d2
Compare
meta-codesync
Bot
changed the title
Abbondanzo
force-pushed
the
export-D100870075
branch
from
October 1, 2026 05:50
00b53d2 to
1d37783
Compare
Abbondanzo
added a commit
to Abbondanzo/react-native
that referenced
this pull request
Oct 1, 2026
…ct#58657) Summary: Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed. Recheck edge callbacks after post-scroll render updates. Deduplicate each edge by item count and edge item key, re-arm on real movement away from the edge, and allow data-backed layout growth to start a new end-edge generation without treating measurement-only churn as a new callback. Changelog: [General][Fixed] - Fire `VirtualizedList` edge callbacks after programmatic scrolling Differential Revision: D100870075
Abbondanzo
added a commit
to Abbondanzo/react-native
that referenced
this pull request
Oct 1, 2026
…ct#58657) Summary: Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed. Recheck edge callbacks after post-scroll render updates. Deduplicate each edge by item count and edge item key, re-arm on real movement away from the edge, and allow data-backed layout growth to start a new end-edge generation without treating measurement-only churn as a new callback. Changelog: [General][Fixed] - Fire `VirtualizedList` edge callbacks after programmatic scrolling Differential Revision: D100870075
Abbondanzo
force-pushed
the
export-D100870075
branch
from
October 1, 2026 06:07
1d37783 to
c97eaa6
Compare
Abbondanzo
added a commit
to Abbondanzo/react-native
that referenced
this pull request
Oct 1, 2026
…ct#58657) Summary: Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed. Recheck edge callbacks after post-scroll render updates. Deduplicate each edge by item count and edge item key, re-arm on real movement away from the edge, and allow data-backed layout growth to start a new end-edge generation without treating measurement-only churn as a new callback. Changelog: [General][Fixed] - Fire `VirtualizedList` edge callbacks after programmatic scrolling Differential Revision: D100870075
Abbondanzo
force-pushed
the
export-D100870075
branch
from
October 1, 2026 06:13
c97eaa6 to
55bb411
Compare
…ct#58657) Summary: Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed. Recheck edge callbacks after post-scroll render updates. Deduplicate each edge by item count and edge item key, re-arm on real movement away from the edge, and allow data-backed layout growth to start a new end-edge generation without treating measurement-only churn as a new callback. Changelog: [General][Fixed] - Fire `VirtualizedList` edge callbacks after programmatic scrolling Differential Revision: D100870075
Abbondanzo
force-pushed
the
export-D100870075
branch
from
October 1, 2026 13:45
55bb411 to
fcd4523
Compare
This branch has not been deployed
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:
Programmatic list scrolling can move to an edge before asynchronously scheduled cells finish rendering. The scroll handler then skips the edge callback because the terminal cell is not yet in the render window, and no later scroll or layout event is guaranteed.
Recheck edge callbacks after post-scroll render updates. Deduplicate each edge by item count and edge item key, re-arm on real movement away from the edge, and allow data-backed layout growth to start a new end-edge generation without treating measurement-only churn as a new callback.
Changelog:
[General][Fixed] - Fire
VirtualizedListedge callbacks after programmatic scrollingDifferential Revision: D100870075