Where did these lines come from?

.

I created a projection around this model and suddenly these lines just appeared. Not part of the projection and they aren’t everywhere, just on some areas.

Can you share a screenshot of your sketch? And you can delete the lines.

Umm, there already is a screen shot in the post.

And yes, obviously the lines can be deleted but I’m finding that the app is creating a bunch of them and that means way more work for something that shouldn’t be happening in the first place.