I'm using the Yandex browser and I have the same problem. The versions 184.108.40.2062 and 220.127.116.119 are affected. After a downgrade to version 18.104.22.1688 Auto-Fill works fine again. Please fix this as soon as possible. Without Auto-Fill the app is useless to me. I'm using Android 10 on a Samsung Galaxy S10e.