Webhook doesn't show data for second element with same name as first one

Description

Steps to reproduce

1. Create a form with 2 elements having the same name: Text, Text, Submit.
2. Configure a webhook.
3. Add the form to a page.
4. Publish all.
5. Enter different data to 2 Text elements: Text11 and Text12 then submit.

Expected:
Webhook should show data for 2 Text elements.

Actual:
Webhook only shows Text: Text12. Text: Text11 is missing.