Unity UI Resize Child Items of a Layout

I have a horizontal layout(fills the screen width) which has a bunch of tiles as child.
The tile is composed of 2 images, One is parent, the other is the child
If the layout reaches the screen width size, the tiles resize(child control size on horizontal layout) and maintain aspect(preserve aspect on image) but they actually don't resize just like we do when we SCALE down an object. The child image becomes very small compared to the parent.. is there anyway to fix this OR is this the intended behavior?

 

Same issue here!