pressing enter to submit doesn't use form's action url

[v3nt]

Using this on a search input field. If I press the submit button the form submits to action url /search/test.

However if I use disableAutoFill() on the field pressing ENTER seems to generate a random URL to submit too. ?=ujzykrirf =test.

Not entirely random as it uses the randomly generated name of the input field.

<input id="searchFoundInput" type="search" class="search-field" placeholder="Search by postcode, feature, location type or reference" value="" name="ujzykrirf">

All browsers.