The only thing I remember seeing mentioned is the sleepy/blazed looking eyes and given some of the faces she made throughout the stream it looks like it's probably just a need to tweak some of the settings or at worst a small fix of the rigging on the eyes. All this is also assuming it wasn't just Pippa's ghetto setup is this 'issue' didn't look present in any of the others using them I have seen.
I wonder who rigged them, it mentions Shiina and ???? and Shiina as the artist would be the obvious thing so is ???? a rigger and they were a fully in-house job?