Calling setBackgroundDrawingCallback with a nil value will lead to problems

[matt (gingerbeardman)]

Not sure if this is related.

Removing a previously set background drawing callback results in a crash

This method is often misunderstood as being a little more magical than it really is; all it does is create and configure a new sprite, and assigns drawCallback to the new sprite's drawing callback. (it's defined in CoreLibs/sprite.lua, and actually the entire source is right in the documentation if you would like to see what it does (See: Inside Playdate). The newly-created sprite is returned from the function, so to remove it you can call :remove(): local bgSprite = playdate.graphics.sprite.s…