Scilab 5.2 + xcos: Bug when dragging / moving parts

[Crypto]

Hi,

I am not sure if this is a bug or if I am just missing out something.

I use scilab on an AMD64 sidux notebook that has kernel 2.6.32, German 
interface, NVIDIA display driver, dualhead mode.

Steps to reproduce:

1.) Run scilab 5.2.0.

2.) In the Konsole, enter xcos to run xcos. xcos will open the "Paletten" 
window ("Palette browser") and a "Unbenannt" window ("Unnamed" or "New").

3.) In the Palette Browser choose electric components ("Elektrisch"). Any 
other palette will do, probably.

4.) Drag a resistor into the "Unbenannt" ("New" or "Unnamed") window.

5.) Drag another component into the "Unbenannt" window. BUG: the component 
will be dragged to the window, but it will not show up. It simply disappears 
from view.

Actually, the newly added component is not gone, it is there. It just cannot 
be seen. You need to update the view in "Unbenannt". Do this:

6.) In the menu "Ansicht" ("View") select "Vergrößern" or "Verkleinern" ("Zoom 
in" or "Zoom out"). The view will be zoomed in or out and the components, the 
first one (resistor) and the newly added one will be visible.

7.) Move around any of the two components. If you release the mouse button, 
the moved componend disappears from view and - worse even - it is not apparent 
that the component has moved at all, as it will still be displayed at its old 
position. Again, do step 6.) and you will see that the moving of the component 
worked but the view was not updated.

Bug? Feature? Err...

Thanks for any hint and kind regards,
Crypto.