Align Target jumps to last pointer position on Pointer Down (iOS only)

[thomas10M]

I have a drag & drop card system that works perfectly in the Rive editor but has a bug on iOS runtime.

Setup:

A group containing a card with a hitbox and a movebox
A translation constraint on the group (to return to initial position)
3 listeners:
Pointer Down on hitbox → disables constraint (strength to 0%)
Pointer Move on movebox → Align Target to move the group
Pointer Up → re-enables constraint (group returns to initial position)
Expected behavior:
When I tap on the hitbox, the card should stay in place and follow my finger.

Actual behavior on iOS:
When I Pointer Down on the hitbox, the group instantly jumps to the last position where I lifted my finger (previous Pointer Up location), then follows my finger correctly.

Note: This works correctly in the Rive editor - the issue only occurs on iOS runtime.

Runtime version: [6.13.0]

Device & Versions

• Device: iphone 14
• iOS version IOS 26.1

[thomas10M]

Additional observation: In the Rive editor, I'm using the On Pointer Move listener and the drag & drop works perfectly. However, when I use the On Pointer Drag listener instead in the same editor, I get the same jumping behavior that I'm experiencing on iOS.

This suggests a potential issue: Could the iOS runtime be converting or auto-mapping On Pointer Move to On Pointer Drag internally? Since On Pointer Drag exhibits the same buggy behavior in the editor, it might explain why the iOS runtime shows this jump-to-last-position issue.

Worth investigating: Does the iOS runtime have proper support for the On Pointer Move listener, or is it being internally converted to another pointer event type?