The recent update is the horrible update. The update have a bug which you can found when you have voice call with somebody. You will see the default dark theme WhatsApp wallpaper even when you're using light mode. Looks worse. I do several follow ups given by whatsapp official help center but the problem still persist. Even my friends found the same issue. So this is the problem related to updates you given 2.22.6.72 Please kindly give a fixed update.