Hi Pilou,

Yes it is definitely a real bug - it is not just with "a lot" of circles though, it has to do with having circles that are going in opposite directions from one another, like one going in a clockwise direction, and the other in a counter-clockwise direction, combined with a certain ordering of them.

It won't happen if you have a bunch of circles created by array for example, because those have all the same clockwise or counter-clockwise orientation. But when using mirror the second curve created will have an opposite clockwise orientation.

It does not look like it should be very difficult to fix.

- Michael