Ah, I see it now, sorry haha. It's 1:30am here, I'm tired.
Mmh. It is difficult to judge exactly how people tend to use the different mode. Me personally would be selecting smaller areas when I am using it, hence the issue never really shows up. But I reckon a great deal of people are selecting big areas like that.
I'll have a quick look at it tomorrow, at the moment I can't think of anything it could break to fix this issue.
What about vertical text? How often would you be trying to capture that in your case? Would it be on the web or do you play any games with vertical text? :)