Ever since I got iPad Air 5 I’ve been using it with LG Ultrafine 4K display and it always had this issue: when you put your iPad into sleep mode with the monitor connected - the monitor will display black color, kind of indicating it’s sleeping, but it’s actually doing so with backlit on and rendering 4k black pixels. Today I have noticed that apparently iPad on 16.4.1 is actually putting the display asleep! Did you experience the same?