This is a bit of a retrospective
In November we were well into the swing of a migration from Office 2010 to Office 2013. The vast majority of the update alpha test group were running Office 2010. The vast majority of the beta test group were Office 2013.
As part of the November 2015 monthly release, I deployed KB3101488. It went through the alpha testing and no issues were recorded… but as noted above, we were light on the ground for Office 2013
Worryingly, it sailed through beta testing.