When rendering my scene stencil layers seem to work great, except for the groom layer.
It seems to be a bug as the hair sometimes renders but its glitching in and out or displaced, or sometimes simply not rendering at all.
Am I missing a setting somewhere? Should I bind the groom in a different way to get it to work? Currently using a alembic groom asset binded to an alembic geo cache.
Really need the hair as a stecil layer for compositing in Nuke 
Any help would be greatly appricated!