I've answered my own curiosity. So, now the question becomes what caused the online IDE to start dismissing the highlit area when the mouse moves to the chrome window boundry trim?
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.
Tue 2020.04.28
While mulling around, I remembered I had seen a link for the emulator:
I've answered my own curiosity. So, now the question becomes what caused the online IDE to start dismissing the highlit area when the mouse moves to the chrome window boundry trim?