unwanted purple entity snap targets

This has been happening for years, and I don't understand it. When doing a line command (for instance) I want narrow down to _mid. Fine, usually works. But, sometimes I get purple (instead of red) snap targets. What are these? They seem to block that actual locations I want. How do I stop these purple targets?

In the picture this is definitely not the midpoint of this solid's edge.

Welcome!

It looks like you're new here. Sign in or register to get started.

Comments

Welcome!

It looks like you're new here. Sign in or register to get started.

Welcome!

It looks like you're new here. Sign in or register to get started.