<p dir="ltr">About 4751 I remember to have the same problem on first try to port icon_size to pixel_size</p>
<p dir="ltr"><a href="http://people.sugarlabs.org/ignacio/Without%20IconSize.png">http://people.sugarlabs.org/ignacio/Without%20IconSize.png</a></p>
<p dir="ltr">So, I think this is a problem of pixel_size</p>