onSubmit validation skips untouched fields when some fields have onBlur validation

Describe the bug

When using TanStack Form with onBlur validation on all individual fields and onSubmit for the entire form, the onSubmit validation only validates fields that have been "touched" (focused/blurred). Fields that haven't been interacted with are skipped during form submission validation, even though they should be validated.

Your minimal, reproducible example

https://stackblitz.com/edit/vitejs-vite-sviy39k3?file=src%2FApp.tsx

Steps to reproduce

1. Focus and blur the "First Name" field (leave it empty)
2. Leave the "Last Name" and "Email" fields completely untouched
3. Click "Submit Form"
4. Notice that only First Name shows an error, but Last Name and Email don't

Note: If you submit without blurring any fields, all fields are correctly validated and show errors.

Expected behavior

All fields should be validated on form submission, regardless of whether they have been touched or not. The onSubmit validation should validate the entire form schema, not just the "dirty" fields.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

• OS: macOS 15.5
• Browser: Chrome
• Version: 138.0.7204.184

TanStack Form adapter

react-form

TanStack Form version

v1.15.2

TypeScript version

v5.9.2

Additional context

No response

Beginne mit der verknüpften StackBlitz-Reproduktion unter Verwendung des react-form-Adapters und verfolge das Verhalten der Formularübermittlungsvalidierung, wobei für jedes Feld die onBlur-Validierung aktiviert ist. Bestätige, dass das Absenden, nachdem nur First Name den Fokus verloren hat, auch Fehler für das unberührte Last Name und Email meldet, und erhalte dabei das Verhalten, dass beim sofortigen Absenden alle Felder validiert werden.