I have upgraded to v 4.12.0 (This was done by copying and overwriting the files in my web directory CSS/JS etc)

Since then the form validation is now working (When i copy back in previous version 4.11 it does)

Sample code:

<form name="additem" class="needs-validation"  method="post" action="process....." novalidate>
<div class="col-md-12">
    <div class="md-form">
        <input type="text" name="location" id="location" class="form-control" required>
        <label for="location">Site Location</label>
        <div class="invalid-feedback">
            Please enter a Location
        </div>
    </div>
</div>

<button class="btn btn-blue-grey" type="submit">Save New Call</button>

What am i missing? When i remove the novalidate option from the form tag the standard validation works - the issue is with the material validation