Incorrect response in the Web IDE

This looks like the missing characters thing.

I've noticed that if the Espruino has been doing other stuff, "send to espruino" can sometimes result in the Espruino not being ready to receive data in time. Doing a reset() first seems to prevent this.

Also, the flow control is generally a bit flaky. Sometimes I seem to have problems, and have never found clear pattern with why. You can turn on Throttle Send (under settings, communication) to deal with this once and for all, at the cost of slower sending.