Whener I open 3DS Controller (https://gbatemp.net/threads/3ds-controller.375443/) and I exit it by pressing Select + Start, it goes back to the main menu. The interesting part is that the screens' backlights aren't on, while the screens itselves are, which leads to what happens in the video. Also, the effect remains when I open any apps, even the homebrew launcher. It can be solved by moving the 3D slider. Here's the video: Not sure if this belongs in this subforum, so let me know.