What happened?

Description

This issue only seems to be happening since updating to 5.3.

The following form is not uploading the image I add to the file input to the asset field in the CMS. It creates the asset, but does not link it up to the field headerImage

<form method="post" accept-charset="UTF-8" enctype="multipart/form-data">
    {{ csrfInput() }}
    {{ redirectInput(url(craft.app.request.getPathInfo, { notification: 'profileUpdated' })) }}
    <input type="hidden" name="action" value="users/save-user">
    <input type="hidden" name="userId" value="{{ currentUser.id }}">

    <input type="file" name="fields[headerImage][]">
    <input type="submit" value="Submit">
</form>

This was working absolutely fine whilst running a 5.2.x version

Craft CMS version

5.3.1

PHP version

No response

Operating system and version

No response

Database type and version

No response

Image driver and version

No response

Installed plugins and versions