C++ 4.16 Transition Guide

Some pictures in case anyone is having the same issue. Fresh clone from 4.15 -> 4.16, my UWidget wrapping a Slate SBox/Sbutton/STextBlock is rendering as faint white dots.

e86d5462aa17a5f82e7a2c3da6e9f08baf1c9cf4.jpeg 4.16.JPG
4.15 on left, 4.16 on right