Also works for me in Edgy. And I don't get any warning in the stardard error output about these multiple lines. And upstream is currently marked as "in progress". so I'll mark this Ubuntu bug report fixed.
** Changed in: firefox (Ubuntu) Status: Confirmed => Fix Released -- HTML link "tooltips" (A element's title attribute) with newlines in them render incorrectly https://launchpad.net/bugs/19250 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs