There will be other times when the Bangle's is busy enough it doesn't get around the idle loop for a while, so it may be those times where you're seeing the ghosting in addition to the loading screen.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
There will be other times when the Bangle's is busy enough it doesn't get around the idle loop for a while, so it may be those times where you're seeing the ghosting in addition to the loading screen.
I've filed an issue for it at https://github.com/espruino/Espruino/issues/2097 and I'll try and get a fix in when things calm down here