HTMX inline validation & browser autofill

Question

Consider the following input:

<input class="form-control"
       id="phone"
       type="tel"
       hx-post="/validate"
       hx-select="#phone-number-validation"
       hx-target="#phone-number-validation"/>

When a user autofills on a different input, consequently filling the telephone number input, there is no request sent.

How to ensure inline validation requests are sent when inputs are autofilled?