The Xiaomi 14T Pro can experience an increase in temperature when using floating window shortcuts due to the multiple APPs running simultaneously in the background. This feature allows for enhanced multitasking, however, the processing demands on the device increase, leading to higher power consumption. As a result, the phone's temperature can rise noticeably during prolonged use of this function. However, this is a normal occurrence, as managing multiple APPs at once requires more resources. It does not indicate any malfunction or risk, and you can continue using the floating window feature without concern.