Having already been disabled on Linux for failing randomly, and in the knowledge that Mossop independently found that a window-opening test (I don't have a bug#) would cause it to fail, I made the test for bug 427559 run before another window-opening test so that it wouldn't fail despite checking in bug 365467. Note that as things stand the test for bug 427559 is now re-enabled on Linux.

bug 391728 has the testcase I was having problems with (still yet to be landed)

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046 Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5. If you have questions, please contact :mdaly.