This issue is verified as fixed on Firefox for Android 148 beta 7 and Firefox RC 147.0.2. Confirming that the "Select address" prompt is no longer displayed when focusing the email field from https://sso.mozilla.com .
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This issue is verified as fixed on Firefox for Android 148 beta 7 and Firefox RC 147.0.2 using Google Pixel 10 Pro (Android 16) and Samsung S24 Ultra (Android 16). Confirming that the "Select address" prompt is no longer displayed when focusing the email field from https://sso.mozilla.com .