Your link requires to be logged in to see the actual bug ticket.
Oops. Sorry! Here is a different view of the bugs. I verified this list didn't require Bugzilla account.
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1396098%2C13...
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1396098%2C13...
https://bugzilla.mozilla.org/showdependencytree.cgi?id=15606...