Periodic BSpline boundary layer extrusion
There seems to be a bug when extruding periodic BSpline. At the point of periodicity, the extrusion starts from the control point and not from the curve (Figure).
Here is the script to reproduce the problem: `
lc = 0.1;
Point(1) = {0, 0, 0, lc};
Point(2) = {1, 0, 0, lc};
Point(3) = {1, 1, 0, lc};
Point(4) = {0, 1, 0, lc};
BSpline(1) = {1, 2, 3, 4, 1};
Extrude {Curve {1}; Layers{{10},{0.5}};}
`