The sidebar function is a normal system module and is not a hardware touchscreen issue. If this function affects the touchscreen experience in certain scenarios, you can press and hold on to the white bar of the sidebar and drag it to another position. Alternatively, you can adjust the opening scenarios of the sidebar or disable the sidebar function. It is appreciated for your backing of Xiaomi products.
To set the sidebar on your phone, please refer to the following steps:
1. Go to [Settings];
2. Tap [Additional settings];
3. Tap [Floating windows];
4. Tap [Sidebar];
5. Adjust the setting in the side toolbox as you prefer.