Hi,
I have a strange problem. When editing in Cornerstone the last image of the gallery (from The Grid) is repeated again and again. When I change The Grid ‘Gallery’ to another grid like a masonry-layout the problem is gone.
It only happens in Cornerstone ‘edit’ mode. Frontend is OK.
Thx in advanced!

Grts Marco
forum with exact the same problem. However this post is from July 29 2016!!!