Steps to reproduce:
1) Load <https://news.ycombinator.com/item?id=8168714>.
2) Double-click in the space to the right of a header of a comment (e.g., to the right of "SoftwareMaven 30 minutes ago | link").
Created attachment 236474 [details]
Comment on attachment 236474 [details]
Reviewed in person by Tim Horton.
Committed revision 172497.