Not fully initialising on page load

I use hcaptcha in my login form. On Safari, both on iOS and desktop, the hcaptcha ‘box’ is visible on page load, but the checkbox inside this box does not show. Users have to tap the page for the checkbox to start showing.

This is not ideal, as the browser might allow the user to login with Touch ID or Face ID, and, if this is the case, the user can submit the form without noticing the hcaptcha checkbox (which isn’t showing). The consequence of this is that the user is not logged in and is returned to the login form (with an error related to not having submitted the captcha).

The checkbox should be visible upon page load to avoid a situation like this.