Sol, ths one's for you and the team. Amy, don't change this until Sol's seen it!
Go to Amy_s`s new Chapter 17, Dictates of Faith. Start an inline review. As the FIRST comment, go to the second paragraph, first two sentences beginning with 'this', the second one italicized. Try to capture the first sentence and the first word of the second sentence for the comment. You will find that the machinery captures the whole of both sentences. Cancel the comment and try again. You will find that you cannot start a new comment until you reload the page.
I suspect that there are at least two bugs at work here, both probably design errors. My distant guess is that there's an XHTML or HTML representation and something is jumping over a -span-. If that's not it, it doesn't matter; it is a bug, and might reveal a lot about the other glitchen people are hitting when selecting text.
The second one, I am guessing, has to do either with cleaning up on the cancel or with something that confuses an empty set (however represented) with no set. Again, distant guess.
Please have a look at this frustrating mmisbehavior. Thanks ....