My MacBook Pro (15-inch, 2018), OS Mojave, changes the brightness of any black screen (for example movie titles) depending on what angle the monitor is folded to. The further away from the keys, the brighter the black screen becomes, until it is white. I also noticed that logos and such leave "remains" even after they are gone, overlay whatever I am displaying next (for example the apple logo still shines through on my desktop once it is booted up). Auto-brightness is off. I highly appreciate your help.