Vector Output - a wish

Last week I have uploaded a model with the “dead sections”. I have redone the whole thing and after a couple of updates, the new ones again became dead.
This whole issue is incredibly unreliable. Do you have some feedback on these issues?

[edit] The problem with the “dead sections”, besides the obvious problem of their ‘demise’, is that they don’t go away by eliminating the clipping planes. So not only you need to delete the clipping planes, but also manually eliminate the drawing’s layers.