The address snippet is missing the autocomplete attributes for the address compound component.
{% from "govuk/components/input/macro.njk" import govukInput %}
{% from "govuk/components/fieldset/macro.njk" import govukFieldset %}
{% call govukFieldset({
legend: {
text: "What is your address?",
classes: "govuk-fieldset__legend--l",
isPageHeading: true
}
}) %}
{{ govukInput({
label: {
html: 'Building and street <span class="govuk-visually-hidden">line 1 of 2</span>'
},
id: "address-line-1",
name: "address-line-1",
autocomplete: "address-line1"
}) }}
{{ govukInput({
label: {
html: '<span class="govuk-visually-hidden">Building and street line 2 of 2</span>'
},
id: "address-line-2",
name: "address-line-2",
autocomplete: "address-line2"
}) }}
{{ govukInput({
label: {
text: "Town or city"
},
classes: "govuk-!-width-two-thirds",
id: "address-town",
name: "address-town",
autocomplete: "address-level2"
}) }}
{{ govukInput({
label: {
text: "County"
},
classes: "govuk-!-width-two-thirds",
id: "address-county",
name: "address-county"
}) }}
{{ govukInput({
label: {
text: "Postcode"
},
classes: "govuk-input--width-10",
id: "address-postcode",
name: "address-postcode",
autocomplete: "postal-code"
}) }}
{% endcall %}