react / react/react-native

When quickly scrolling the sectionList component, the stickySectionHeader displays the wrong component.

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Component: SectionList Issue: Author Provided Repro Newer Patch Available
Dominant language
C++
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Description

When quickly scrolling the sectionList component, you will notice that the stickySectionHeader displays an incorrect component before switching to another one. In the seventh second of the ios video, you can see that during the fast scrolling, the sticky header changes from section 7 to section 1, then back to section 6. This issue occurs on both Android and iOS.

Steps to reproduce
  1. install the application
  2. cd ReproducerApp and run npm ci
  3. npx react-native run-ios or npx react-native run-android
  4. then quickly scroll up and down the sectionList component.
React Native Version

0.79.0

Affected Platforms

Runtime - iOS、Runtime - Android

Output of npx @react-native-community/cli info
System:
  OS: macOS 14.2.1
  CPU: (8) x64 Apple M3
  Memory: 39.72 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.11.1
    path: ~/.nvm/versions/node/v20.11.1/bin/node
  Yarn:
    version: 2.4.3
    path: ~/.nvm/versions/node/v20.11.1/bin/yarn
  npm:
    version: 10.2.4
    path: ~/.nvm/versions/node/v20.11.1/bin/npm
  Watchman:
    version: 2024.10.21.00
    path: /usr/local/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 23.4
      - iOS 17.4
      - macOS 14.4
      - tvOS 17.4
      - visionOS 1.1
      - watchOS 10.4
  Android SDK: Not Found
IDEs:
  Android Studio: 2023.3 AI-233.14808.21.2331.11709847
  Xcode:
    version: 15.3/15E204a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.11
    path: /usr/bin/javac
  Ruby:
    version: 3.1.0
    path: /Users/didi/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 18.0.0
    wanted: 18.0.0
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.0
    wanted: 0.79.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: true
Stacktrace or Logs
no logs
MANDATORY Reproducer

https://github.com/yandadaFreedom/RN-bug-repo/tree/bug-sticky-header

Screenshots and Videos

iOS:

https://github.com/user-attachments/assets/8c6dd9b4-5161-49ee-86a2-c1cb01035a26

android:

https://github.com/user-attachments/assets/6cf3ae85-3d60-4a59-bea5-fecea6644e23

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the mandatory ReproducerApp on the bug-sticky-header branch: run npm ci, then npx react-native run-ios or npx react-native run-android. Reproduce rapid scrolling in the SectionList and inspect the stickySectionHeader behavior on both platforms. Done means the sticky header consistently shows the correct section during fast scrolling.

Written by the indexing model from the issue text.

Assessment

Tech stack
react-native
Domain
mobile
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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