As an Asian woman, that looks like a child. The picture of Jung looks like an adult. They're not the same.
The first SB character Eve has cute youthful Korean-inspired features, but she still has clear adult proportions and facial structure. A woman looking young isn’t the same thing as looking like a child.
If so so many people are saying a new character looks childlike, that tells you there’s something different about the design that people are picking up on. That's it.