I'm having this strange problem with the newer versions of NW. It's very noticeable when the sprite or 9patch have transparent edges.
Take a look at the difference between node versions with a rope that I made with some little white pieces:
No problem. That's with node 0.19.4 - imgur.com/a/jtM73
Problem. That's with node 0.21.1 - imgur.com/a/AS8cs
Seems like with the newer nodes the transparent edges are bigger, cause it's more visible. The rope looks "sliced".
What is happening?