Description of problem: Log in locally. On another box ssh into the machine. Start mozilla - it displays on the box you ran ssh from Start epiphany - it display on the box you ssh *TO* How reproducible: 100% The epiphany windows should start on the right desktop.
Nice. This is probably some random GNOME factory fun.
There is a report upstream: http://bugzilla.gnome.org/show_bug.cgi?id=114219