In a58dd0b5c3 sequential overlay segments
writing was replaced by a parallel one. But there was one hidden issue:
each curve knows its number of points and starting offset. If you want
to drop one curves set from domain -- you have to sequentially offset
all other curves. And this was not done. Gap between poly and nurbs
curve ,point indices created for bezier still there. And once it stop
being filled by 0 after 3e8250e60c we meet
all the segments of garbage. Proper fix: lay left handle segments in
space created for bezier segments. This fix: hide issue until proper
fix (non trivial refactor).
Pull Request: https://projects.blender.org/blender/blender/pulls/143858
0c41f53cf7