As luck would have it, right after I wrote about synchronous vs. asynchronous event handlers, I found exactly that problem in by bililiteRange code. It uses dispatchEvent to fire an input event when text is inserted, but that fires synchronously, so that the event handlers run before the bililiteRange.text() has fully run. I ended up having to wrap the dispatchEvent in a setTimeout to force it to be asynchronous.
The bililiteRange.js code is now at version 1.7.
