Why AE changes my screen brightness?(Solved)

(I don't know why but it seems that there are independent screen brightness settings for explorer and AE, and I can actually change them...)

I work with a notebook with a external monitor.

Resently, I find that when AE is open, it changes the brightness of my laptop screen.

When I click on a AE window, the brightness increases a little, and when I click on desktop, brightness reduces.

This only happens on the laptop screen, the external monitor is not affected.

Here's a video I recorded, you can see brightness changes a bit when I move my mouse and click on AE or desktop.