tvOS Nested Adapter example doesn't keep offset

[rafalszastok]

New issue checklist

• [x] I have reviewed the README and documentation
• [x] I have searched existing issues and this is not a duplicate
• [x] I have attempted to reproduce the issue and include an example project.

General information

• IGListKit version:
• tvOS version(s): 12
• CocoaPods/Carthage version: -
• Xcode version: 10.1
• Devices/Simulators affected: Apple TV 4K
• Reproducible in the demo project? 100%
• Related issues:

Debug information

Open tvOS example. Change NestedAdapterViewController field data to:

let data: [Any] = [
        "Most Recent",
        20,
        "Recently Watched",
        16,
        "New Arrivals",
        30,
        "New Arrivals",
        10,
        "New Arrivals",
        50
    ]

Steps:

1. Scroll to the end on Most Recent HorizontalSectionController.
2. Scroll to the bottom. Expected: See 1st item on every HorizontalSectionController. What happens: Some HorizontalSectionController that appear on screen has the same offset as first collection view.

NOTE: Preserving contentOffset won't work, since focused item is also held by collectionView. The offset will be automatically updated to different position, when you scroll fast vertically.

[rafalszastok]

Is there any chance this issue will be prioritised and fixed?

[snoozemoose]

@rafalszastok I'm having the very same problem and was hoping that a migration to IGListKit could fix this issue :-/. Have you tried to use UICollectionView's preferredIndexPath delegate function? I was near a working solution using this delegate function but had some other problems that I was hoping could be fixed by migrating to IGListKit.