I'm more interested now in how this application got pushed to production in its current state.
Definitely one of the biggest challenges in building this product is getting the annotation interface to work consistently in a “host page” environment over which we have pretty much no control or advanced knowledge. So for instance, the jump-you-to-the-top bug isn't something we've seen in the general case; we're currently getting to the bottom of why it's happening on this particular page.
Also, after a long piece of annotated text its annoying that the box pops up at the very bottom of the text rather than side by side.
Great content tho, enjoying the read.