Autocomplete ignores textarea fields

Email Address & Password:

        <dl class="form">
            <dt>Email Address: <span class="red">*</span></dt>
            <dd><input type="email" class="textbox" name="email" value="" autocomplete="email username" max="100" required="" data-com-onepassword-filled="light"></dd>

            <dt>Create Password: <span class="red">*</span></dt>
            <dd><input type="password" class="textbox" name="password" autocomplete="new-password" min="8" max="100" required=""></dd>

            <dt>Confirm Password: <span class="red">*</span></dt>
            <dd><input type="password" class="textbox" name="password_confirmation" autocomplete="new-password" min="8" max="100" required=""></dd>
        </dl>
    </div>

    <div class="white-form-panel">
        <h4 class="heading">Billing Address:</h4>

        <dl class="form">
            <dt>Name: <span class="red">*</span></dt>
            <dd><input type="text" class="textbox" required="" name="billing[details][name]" value="" autocomplete="name"></dd>

            <dt>Company Name: </dt>
            <dd><input type="text" class="textbox" name="billing[details][company]" value="" autocomplete="organization"></dd>

            <dt>Address: <span class="red">*</span></dt>
            <dd>
                <textarea class="textbox" required="" name="billing[details][street]" autocomplete="address-line1"></textarea>
            </dd>



            <dt>Town/City:</dt>
            <dd>
                <input type="text" class="textbox" name="billing[details][city]" value="" autocomplete="city">
            </dd>

            <dt>Postcode: </dt>
            <dd><input type="text" class="textbox" name="billing[details][postcode]" value="" autocomplete="postcode"></dd>

            <dt>Region: <span class="red">*</span></dt>
            <dd>
                <select class="needsclick" autocomplete="address-level1" required="" name="billing[details][region]"><option selected="selected" value="">Select</option><option value="Auckland">Auckland</option><option value="North Island">North Island</option><option value="South Island">South Island</option></select>
            </dd>

            <dt>Contact Number:</dt>
            <dd><input type="tel" class="textbox" name="billing[details][phone]" value="" autocomplete="tel"></dd>
        </dl>
    </div>

    <div class="white-form-panel no-margin-bottom">
        <h4 class="heading">Shipping Address:</h4>

        <div class="new-address-section">
            <div class="clearfix radio radio-group">

                <label class="radio">
                    <input name="unique_ship" value="" data-key="0" type="radio" checked="">
                    Same as Billing Address
                </label>
                <label class="radio">
                    <input name="unique_ship" value="1" data-key="1" type="radio">
                    Deliver to another Address (please fill in details below)
                </label>
            </div>

            <fieldset id="shippingBlock" disabled="" style="border:none;padding:0;margin:0" hidden="">
                <dl>
                    <dt><label for="new-customer-shipping-name">Name: <span class="red">*</span></label></dt>
                    <dd><input id="new-customer-shipping-name" class="textbox" name="shipping[details][name]" required="" type="text" value="" autocomplete="name"></dd>

                    <dt><label for="new-customer-shipping-company">Company Name:</label></dt>
                    <dd><input id="new-customer-shipping-company" type="text" class="textbox" name="shipping[details][company]" value="" autocomplete="organization"></dd>

                    <dt><label for="new-customer-shipping-address-1">Address: <span class="red">*</span></label></dt>
                    <dd><textarea id="new-customer-shipping-address-1" class="textbox" name="shipping[details][street]" required="" autocomplete="address-line1"></textarea></dd>



                    <dt><label for="new-customer-shipping-suburb">Town/City:</label></dt>
                    <dd>
                        <input id="new-customer-shipping-suburb" class="textbox" name="shipping[details][city]" required="" type="text" value="" autocomplete="city">
                    </dd>

                    <dt><label for="new-customer-shipping-city">Postcode:</label></dt>
                    <dd><input id="new-customer-shipping-city" class="textbox" name="shipping[details][postcode]" required="" type="text" value="" autocomplete="postcode"></dd>

                    <dt>
                        <label for="country_d">Region: <span class="red">*</span></label>
                    </dt>
                    <dd>
                        <select class="needsclick" autocomplete="address-level1" required="" name="shipping[details][region]"><option selected="selected" value="">Select</option><option value="Auckland">Auckland</option><option value="North Island">North Island</option><option value="South Island">South Island</option></select>
                    </dd>

                    <dt>Contact Number:</dt>
                    <dd><input type="tel" class="textbox" name="shipping[details][phone]" value="" autocomplete="tel"></dd>
                </dl>
            </fieldset>
            <p class="alert-box info" style="background-color: #eefaff">Goods can't be delivered to a PO Box or Private Bag.</p>
        </div>
    </div>

    <div class="confirm-register clearfix">
        <div class="content">
                <div class="container">
                    <div class="checkbox">
                        <input type="hidden" name="perm" value="">
                        <input id="perm" type="checkbox" name="perm" value="Y">
                        <label for="perm">I want to hear about sales &amp; product specials (recommended)</label>
                    </div>
                    <div class="checkbox">
                        <input id="terms" type="checkbox" required="" name="terms" value="1">
                        <label for="terms">I agree to website <a target="_blank" href="/help/terms">Terms and Conditions</a></label>
                    </div>
                </div>
            <div class="col2">
                <button type="submit" name="submit" class="white-button">Sign Up</button>
            </div>
        </div>
    </div>
</form>

```

The billing address fields mostly do not prompt for 1P to autofill. Only the city and postcode fields do.
All the applicable fields have autocomplete attributes, which I'd expect to be used for autofill prompts.