A few months ago, my Facebook app suddenly had Dark Mode. It has not happened since. I tried telling several Android news outlets, but none of them even responded to my emails. Back in June I could find no pictures online of this. Maybe it’s more common now. It didn’t seem like a bug, and if I enabled “Force dark mode” in Pixel Settings after it went back to normal, it would have big white boxes showing that it’s not possible to force a good looking dark mode. This is not a forced dark mode.