Is it at all possible that your Bangle could have got immersed in water for a while? I'm struggling to see how this could happen but it feels like the kind of thing that happens when there's water on the outside of the touchscreen, so maybe there is something internal?
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.
Is it at all possible that your Bangle could have got immersed in water for a while? I'm struggling to see how this could happen but it feels like the kind of thing that happens when there's water on the outside of the touchscreen, so maybe there is something internal?