When jumping from 'Xiaoai Speaker' App to 'Mijia' App, there is a red back button blocking on the login page. What is this?

This back button is a function of Xiaomi App, it is not available to be modified by Tuya side. The process is jumping from 'Xiaoai Speaker' App to 'Mijia' App, so they made a return button to return to Xiaoai from Mijia. Unfortunately, it needs to be modified by Xiaomi. Even if this condition results in Xiaoai App restarting. it is also a compatibility issue of the Xiaoai App.