Can 9-slice work on sprites that is smaller than the original image?

[Litttlefish]

I'm using the 9-slice feature on 0.13 to rewrite a counter ui, but when using it, it give me a weird result that is not scaled down.

If I remove ImageScaleMode component, then it will give me a sprite that is correctly resized.

Also I tried using it with SpriteBundle, seems working normally

Is it a bug, or this feature just don't support it?

[Litttlefish]

Since spritebundle is working fine, I'll open an issue from this.