Apparently my Playdate does not autolock anymore--except when not powered. It doesn't switch to the clock if it's plugged into the wall, unless I lock manually.
This is true running any game, or just sitting on the Launcher screen.
(I'm running 1.12.3--maybe that's when the change happened?)
Could this be related to reports of battery running down very quickly?
I’m thinking not: this is only about when plugged into power.
When not plugged into power, my device still autolocks, and battery life has been terrific!
When you say "plugged into the wall," do you mean that literally? I'm speculating but if your device is plugged into a computer and the Simulator is running, the serial connection might be what's keeping it awake.
Good question--it happens whether charging from a computer or from a USB brick.
I assume you already checked this, but in Settings, is 'Auto Lock' set to 'Off while charging'?
I swear I never hit that option, don't have kids or monkeys, and don't sleepwalk. But... that was the answer!