Just for the record it looks like this:
(I’ve added the button and label outside the scrollpanel where it renders ok)
The problem seems to be the blendMode=“multiply” which is applied in the standard-style for the scrollpanel. This somehow makes anything inside the scrollpanel to render without texturing enabled and/or missing texture coordinates when used in jme3.
I don’t know why (yet). I’m pretty sure we had that problem before but I can’t remember what we did the last time it occured 
There is a workaround however. Just add that snippet to your xml somewhere before the screen tag:
[java]
[/java]
And then apply that style to your scrollpanel control:
[java][/java]