Yes, the issue is that the bootloader uses a slightly different USB stack to the main device (the bootloader has stayed the same and Espruino's has improved) and so it's less likely to be picked up automatically :(
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.
Yes, the issue is that the bootloader uses a slightly different USB stack to the main device (the bootloader has stayed the same and Espruino's has improved) and so it's less likely to be picked up automatically :(