`useChartPressState`'s active index no longer aligns with centre of touch since 41.20.2

[Upsilon-Iridani]

Prerequisites

• I have searched the open issues to make sure I'm not opening a duplicate issue
• I have read through the docs before asking a question
• I am using the latest version of victory-native-xl

Describe Your Environment

What version of victory-native-xl are you using? (can be found by running npm list --depth 0 victory-native)
I tried to upgrade form 41.20.1 -> 41.20.2

What version of React and React Native are you using?
0.81.4
What version of Reanimated and React Native Skia are you using?

    "react-native-reanimated": "4.1.3",
    "@shopify/react-native-skia": "2.2.12",

Are you using Expo or React Native CLI?
expo

What platform are you on? (e.g., iOS, Android)
iOS

Describe the Problem

I'm using useChartPressState to highlight a bar graph.

Expected behavior: [What you expect to happen]
In 41.20.1 useChartPressState's active index aligned with the centre of the touch input.

Actual behavior: [What actually happens]
In 41.20.2 useChartPressState's active index aligns with the right most end of the touch input.

Additional Information

If I have time to create a repro I will, right now I have a pressing deadline 😅

[yuval-blink]

I can confirm this regression and I think I've identified the root cause.

My environment

  - victory-native: 41.20.2 (broken) vs 41.17.4 (working)
  - React Native 0.76.6, iOS

When switching to 41.20.2, I experience consistent N+2 offset in matchedIndex for the CartesianChart:

• Click bar 0 → returns 2
• Click bar 1 → returns 3

It seems that PR #633 (v41.20.2) changed from touch.x (chart-relative) to touch.absoluteX (screen-relative) coordinates:

// Before: touch.x is relative to chart container ✅
handleTouch(v, touch.x, touch.y);

// After: touch.absoluteX is relative to screen origin ❌
handleTouch(v, touch.absoluteX - scrolledX, touch.absoluteY - scrolledY);

When the chart container is positioned on screen, touch.absoluteX includes the container's offset. Even with scrolledX = 0, coordinates are wrong:

Click first bar at chart position x=9:
touch.absoluteX: 42 (screen coord = container offset + 9)
scrolledX: 0
Result: 42 - 0 = 42 → matches bar at x=42 (index 2) ❌

Suggested solution is either:

1. Convert absoluteX/Y to chart-relative coordinates before handleTouch
2. Use touch.x/y when not actively panning

Currently I simply downgraded to 41.17.4 and it works as expected

[julian-gargicevich]

Still an issue

[samuelbadru]

experienced this issue too after upgrading to latest, downgrading back down to 41.20.1 resolved it

[Guuz]

Definitely a bug! i have the same