The issue is still reproducible as in the bug description. The expiry date fields (dropdowns) are part of the main frame. The card Number and card Name fields are not displayed at all. See the screen recording attached here. about:autofill attached in comment 2.
Bug 1902422 Comment 2 Edit History
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The issue is still reproducible as in the bug description. The expiry date fields (dropdowns) are part of the main frame. The card Number and card Name fields are not displayed at all. See the screen recording attached here. about:autofill attached in comment 3.