The highlighter highlights other elements when we use the arrow keys. But we don't stop the event. If the web site uses the arrows keys to do "things", it's just a complete mess. Use right/left with this website for example: http://www.tibco.com/ Or try to move the cursor in jsbin.com. I think we should just not highlight other nodes when arrow keys are pressed.
We should only use the arrow keys when the breadcrumbs are focused.
Comment on attachment 638660 [details] [diff] [review] v1 Really into this patch, much better behavior now. I guess you could change that comment since it's a one-item list now, but not necessary at all. Awesome!