Hello Brian,

If I remeber right, the effect happens when an objectlist is still pointing to such objects. It is a while ago that I look to the code. The vector things are created in a very short time with my limited skills in js - so it is possible that there are side effect by using a particular sequence. As I remember - I didn't planned to keep the vector objects - they should have only the purpose to visualize.

I hope that I find some time to have a look.

Have a nice day
Karsten