Steps to reproduce:
1. Open user attached project
2. Select "Fixed Prefab"
3. Notice that only the line renderer appears in the preview
4. Select "Bugged Prefab"
5. Notice that only the sprite appears in preview and the line renderer appears in scene view

Expected result: When a prefab with line renderer on top of the components list is selected, line renderer should not render in scene view, both prefabs selected should display a sprite together with a line renderer in preview window.
Actual result: "Fixed Prefab" displays only the line while "Bugged Prefab" displays only the sprite in the preview window. "Bugged Prefab" selected displays the line in the scene window as well.

Reproduced in: 2018.1.0a1, 2017.3.0b5, 2017.2.0f3, 2017.1.2p1, 2017.1.0b2
Not reproduced in: 2017.1.0b1, 5.6.4f1, 5.5.5p1
Regression since: 2017.1.0b2