Affected Versions:

All latest Firefox versions: Nightly 96.0a1, Beta 95, Release 94.
Fx93 - Unaffected

Tested on:

MacOS 10.15
Windows 10

Preconditions:

browser.search.region DE
extensions.formautofill.supportedCountries DE
download latest Firefox Nightly with region locale (switch extensions.formautofill.available to "on" for testing non-Nightly builds)

Steps to reproduce:

1. Reach the payment form on tchibo.de
2. Click on any auto-filled field and choose any card from the cc dropdown.

Expected Results:

All the auto-filled fields should be highlighted with the auto-fill specific yellow color.

Actual Results:

None of the payment auto-filled fields are highlighted.

Notes:

Severity: S4
Reproducible on Chrome: No
Regression range: this seems to be a regression of Bug 1687682.

Set release status flags based on info from the regressing bug 1687682

Hi,
I just re-tested the issue in the latest Nightly DE build 98.0a1 (2022-02-01) and the issue described is still there. None of the payment auto-filled fields are highlighted with the specific autofill yellow color.

There's a background set on the card name and card number elements and on the expiry year and month select elements. The site seems to be using a transparent background on the select elements in order to show the dropdown arrows.

The autofill specific yellow highlight issue is no longer reproducible in Nightly 125.0a1 (2024-03-07). All the CC fields are now highlighted accordingly for both preview and autofill.
As we agreed with the engineering team and based on this comment, we will mark this issue as fixed and verified.