Make a foreground image fill space without being truncated

[cbestromain]

I want to use 2 image, 1 in foreground and 1 in background. I add them in drawable folder, then I modify xml like this :

         android:layout_width="100dp"
        android:layout_height="100dp"
        app:sv_scratch_background_drawable="@drawable/scratch_win"
        app:sv_scratch_foreground_drawable="@drawable/scratch"
        app:sv_scratch_foreground_repeat="true"

this is my original "scratch"

As we can see on the next screenshoots, the background image looks great, but not the foreground image. Any idea why? Is a normal behaviour (maybe you just want put repeatable texture as foreground) and is there a way to modify this?