Form input type number is suddenly missing when submitted

[tommhuth]

Which Umbraco Forms version are you using? (Please write the exact version, example: 13.4.0)

version 13.4.2

Which Umbraco version are you using? (Please write the exact version, example: 13.5.2)

version 13.8.1

Issue summary

Value is missing/stripped after submitting.

Specifics

The value is missing both when generating an email in a workflow, and when inspecting the submitted record in Umbraco CMS:

Even when the endpoint gives no validation error, value is included and valid. Setting it as required will produce the error reported earlier.

if i change type to string, the value shows up as expected

Steps to reproduce

1. Add an input with type number
2. Submit it with a value
3. inspect the record, or try to generate an email with it
4. its missing 🤷‍♂️

Expected result / actual result

Should not be missing.