Bug 1593246 is in that regression range. Unfortunately, most of the people involved in that bug are already on PTO for the holidays :(
Bug 1604005 Comment 8 Edit History
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Bug 1593246 is in that regression range. Unfortunately, most of the people involved in that bug are already on PTO for the holidays :( EDIT: Actually, that one got backed out. I also see bug 1600906 in there.