extraData does not seem to work for sticky headers

[antoinerousseau]

Current behavior

I want to change an icon in a sticky header when the list has scrolled past a certain point.
For that, I pass a prop in extraData: { iconColor: "red" / "green" }
When I don't use stickyHeaderIndices, it works (the icon turns from red to green when passing the 150px scrollY threshold):

Simulator.Screen.Recording.-.iPhone.15.-.2024-04-12.at.00.37.07.mp4

But when using stickyHeaderIndices, the header is not re-rendered (unless the target changes):

Simulator.Screen.Recording.-.iPhone.15.-.2024-04-12.at.00.40.16.mp4

But if I console.log in the header render function, I see the right value! It just does not render!

Here is an extract of the relevant code:

<FlashList<ListItem>
  data={items}
  getItemType={getItemType}
  keyExtractor={keyIdExtractor}
  renderItem={handleRenderItem}
  overrideItemLayout={handleOverrideItemLayout}
  stickyHeaderIndices={headerIndices}
  onScroll={handleScroll}
  extraData={extraData}
  estimatedListSize={WindowDimensions}
  // and more unrelated props
/>

Expected behavior

The icon color in the sticky should change when extraData changes.

To Reproduce

Platform:

• iOS
• Android (haven't tested yet)

Environment

1.6.4

[w8ight]

experiencing the same issue using
@shopify/flash-list: "1.6.3