Hi Rainer, I can't seem to trigger this problem either...

Could you please post a file with the helix in it, and also let me know exactly what parameters you are using for the scale, like what origin point and scale factor?

If you can get it to a smaller number of more exactly specified steps like that (like "load this file" instead of just create helix), that would let me to at least attempt to replicate the exact same conditions of your problem over here.

- Michael