BUG in Move Repel Under! : Help

[antimix]

Hello,

I have a very complex group made from several shapes + fonts +effects.
Suddenly I discovered that moving it, it makes Xara Designer Pro 6 to drops it (really down like with gravity..) and generates random positions of part of the shapes...

I tried with XARA Extreme Pro 5, and it gives the same probelm even if with a slide different drop behavior.

Here is the capture video. I have just copied a group and "paste in place".
The video starts when I try to move it over another grup....
Look what happens (upper left) when I drag.... and Drop the group !!!!

Xara developers help please.....

http://www.youtube.com/watch?v=YTNSXiU173g

I noticed it when looking carfully a complex group I had moved, I noticed a lot of randomly placed shapes....

Regards