This is normal behaviour for me. It seems the USB port gets in an odd state and physically disconnecting and reconnecting are nescessary.
This is why I usually connect WiFi and connect via IP address. I only use usb for flashing.
@Wilberforce started
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.
This is normal behaviour for me. It seems the USB port gets in an odd state and physically disconnecting and reconnecting are nescessary.
This is why I usually connect WiFi and connect via IP address. I only use usb for flashing.