There was also a Mark Twainish issue with the In Memorium segment ...
https://www.nytimes.com/2017/02/27/arts/oscars-in-memoriam-mistake.html?_r=0
or what Mark said ...
Actually it's stop-motion with CGI etc added
(some story spoilers in the link below)
http://io9.gizmodo.com/kubo-and-the-two-strings-mixes-stop-motion-and-technolo-1782837158