When I close a Bezier Curve, this black drawn curve has a V-shape to the midpoint.
It corrupts the form.
What can I do about this?
I can only suggest starting again using a Bezier circle.
Have you tried making a mesh with this?
You might find that the “V” does not appear.
I don’t know why it’s there but I never managed to remove it either.
The V-shape to midpoint is also drawn in a new Bezier Circle.
I restarted Blender with fresh settings.