How to highlight Line2's edge?

Now, I need to highlight Line2’s edge, But i found this is a bug!

This picture is the bug what i said, 1 is Line2 and 2 is outlinepass

How can i solve this situation?
Help in advance for you!

:sob: :sob: :sob: :sob: :sob: :sob: :sob: :melting_face: :upside_down_face: :upside_down_face: :upside_down_face: :upside_down_face:

Fat Lines are instances. Not sure if OutlinePass supports instanced objects.

Thanks :grinning: :grinning: :grinning: :grinning: :grinning: :grinning: