Boolean bug?

 From:  Frenchy Pilou (PILOU)
92.9 In reply to 92.8 
< those loops are the result of an offset operation that has a large offset distance in an area of tighter curvature
Right :)
< then it can cause the offset to fold over on itself like you have here
Right again :)
So we must see in Zoom the curves befor some booleans functions:)
So how increase the transparency? :)