The screen responds even when the Xiaomi Focus Pen Pro tip is not touching it because the pen supports a hover operation feature. As a result, certain elements in an App interface, such as icons, buttons, or selectable text, will become pre-selected, highlighted, or shown in reverse color before the tip actually touches the screen. This is a part of the stylus design.
Please try to raise the pen tip above 2 cm from the screen. If the highlight or inverted color effect disappears, it means the hover operation feature is working normally and is not malfunctioning.
The hover function improves precision and efficiency by letting you preview your selection before confirming it with a tap. It is especially useful for drawing, writing, editing, and navigating detailed interfaces. Therefore, this response is normal and indicates that the hover feature is working correctly.