I'm also having this problem, since about a week ago, having used my Bangle2 since it arrived around Feb/March this year. I've tried wiggling the button around as suggested here, but that doesn't seem to make any difference.
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.
I'm also having this problem, since about a week ago, having used my Bangle2 since it arrived around Feb/March this year. I've tried wiggling the button around as suggested here, but that doesn't seem to make any difference.