[SectionList] scrollToLocation scrolls past content on iOS

[Jpunt]

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Environment:
OS: macOS High Sierra 10.13.3
Node: 8.2.1
Yarn: 0.27.5
npm: 5.3.0
Watchman: 4.9.0
Xcode: Xcode 9.2 Build version 9C40b
Android Studio: 3.0 AI-171.4443003

Packages: (wanted => installed)
react: ^16.2.0 => 16.2.0
react-native: ^0.53.3 => 0.53.3

Steps to Reproduce

Implement a SectionList and use scrollToLocation to scroll to the last section.

Expected Behavior

It scrolls to the last section, while making sure it doesn't scroll past the content. On Android this works as expected:

Actual Behavior

On iOS scrollToLocation scrolls to far:

This also introduces some weird issues when the user starts scrolling from there on.

Reproducible Demo

https://snack.expo.io/HJgTyClEG

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as "For Discussion" or "Good first issue" and I will leave it open. Thank you for your contributions.

[Jpunt]

This issue is still relevant to RN 0.55.4

https://snack.expo.io/@jpunt/scrolltolocation

Environment:
  OS: macOS High Sierra 10.13.5
  Node: 8.2.1
  Yarn: 1.5.1
  npm: 5.3.0
  Watchman: 4.9.0
  Xcode: Xcode 9.4.1 Build version 9F2000
  Android Studio: 3.1 AI-173.4720617

Packages: (wanted => installed)
  react: 16.3.1 => 16.3.1
  react-native: https://github.com/expo/react-native/archive/sdk-28.0.0.tar.gz => 0.55.4

[DannyvanderJagt]

Got the same issue on IOS. After fiddling around I found a temporary solution for my app:

this.sectionListRef.scrollToLocation({
	itemIndex: -1 , // IOS only
	sectionIndex: index,
})

After this the scrollToLocation works as expected.
Let me know if this works for others too

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as "For Discussion" or "Good first issue" and I will leave it open. Thank you for your contributions.

[stale]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.

[cpojer]

You should be able to use overScrollMode="never" to fix your issue.