Bug in UI themes? Changing theme cause problem!

Bug in UI themes? Changing theme cause problem!


Hi all,
To completely remove my lack of knowledge, i have tried to use only
the code of the resizable sample.
The sample code works fine with the base theme,
but as soon as i change this the theme to humanity, the helper pic for
resizing appears on the wrong place!!
here you can see the UI resizable sample in action:
http://www.helena-schaken.nl/V34/testbord2.php
I only added a base href (works fine for testing purposes) and changed
the theme to humanity!
With the base theme the helper pic appears in the right down corner,
with humanity te helper is always showed on the left side!!
Can somebody explain this for me??
Many thanks in advance!