solid-form's .removeValue(index) in Array form fields not behaving as expected, when removing an index, it replaces all the values with last value.

[manoj-sakthivel-17658]

Describe the bug

when using array form field in tanstack solid form, removing an index causes all the other values to be replaced by the last value.

for example, if the array values are 1, 2, 3, 4, 5. Removing the value at the first index, results in 5, 5, 5, 5.

if the value 3 is removed, then the result is 1, 2, 5, 5.

Your minimal, reproducible example

https://stackblitz.com/edit/solidjs-templates-pczeqty5?file=src%2FApp.jsx

Steps to reproduce

1. remove the first value "apple".
2. you can see that the other values become "netflix" (the last value)

or

1. remove the second value "google"
2. you can see that the values below it all becomes "netflix"

Expected behavior

If the array is 1, 2, 3, 4, 5. and the value 3 is removed, result should be 1, 2, 4, 5

How often does this bug happen?

Every time

Screenshots or Videos

Screen.Recording.2025-06-12.at.6.50.55.PM.mov

Platform

macos

TanStack Form adapter

solid-form

TanStack Form version

1.12.2

TypeScript version

No response

Additional context

No response