Affected Versions:

Nightly 99.a1, Beta 98 and Release 97

Tested on:

MacOS 11
Windows 10

Preconditions:

browser.search.region US
extensions.formautofill.addresses.enabled - true
extensions.formautofill.addresses.supported to "detect"
extensions.formautofill.addresses.supportedCountries US,CA

download latest Firefox Nightly with region locale
have a complete address already saved in about:preferences#privacy

Steps to reproduce:

1. Reach the address form on walmart.com
2. Using the autofill feature, hover over any saved Address entry to check the autofill preview.
3. Using the autofill feature, select any saved address entry.

Expected Results:

All the fields should be successfully highlighted with the specific yellow color on preview and autofill.

Actual Results:

None of the address form fields are highlighted with the autofill-specific yellow highlight color for either preview or autofill.

Notes:

1. Reproducible on Chrome: No

The severity field for this bug is set to S3. However, the accessibility severity is higher, [access-s2].
:tgiles, could you consider increasing the severity?

For more information, please visit auto_nag documentation.

Nightly 125.0a1 (2024-03-07) - The issue remains reproducible for most fields. Only the State field is highlighted. The other fields (First name, last name, city, zip code and phone number) are still not highlighted.

The same issue described in Comment 2 can be reproduced in Nightly 138.0a1 on https://www.walmart.ca/en/ while testing on macOS13 and Windows10.

I checked this on Chrome using Windows 10 and I can confirm that none of the address fields are highlighted during the preview or after autofill.
I've attached a screen recording showing the issue.