I've just updated the terminal app to fix a bunch of outstanding issues (including - hopefully - this one). The new version is 1v29 and should be appearing in the next hour or so.
Note that serial writes are now throttled so should be more reliable - but will be slower. I'll look into whether I can modify Espruino's USB implementation (as it looks like it is something strange in there) - but for now I hope you won't hit this any more.
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've just updated the terminal app to fix a bunch of outstanding issues (including - hopefully - this one). The new version is 1v29 and should be appearing in the next hour or so.
Please let me know if it updates automatically or not - you may have to uninstall and reinstall it from https://chrome.google.com/webstore/detail/espruino-web-ide/bleoifhkdalbjfbobjackfdifdneehpo.
Note that serial writes are now throttled so should be more reliable - but will be slower. I'll look into whether I can modify Espruino's USB implementation (as it looks like it is something strange in there) - but for now I hope you won't hit this any more.