Just an update - this was actually a bug in the 2v13 Bangle.js firmware. If you update to a 'cutting edge' build it should be fixed, but also I believe the new BTHRM app makes it less of an issue as well.
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.
Just an update - this was actually a bug in the 2v13 Bangle.js firmware. If you update to a 'cutting edge' build it should be fixed, but also I believe the new BTHRM app makes it less of an issue as well.