How to reproduce:
1. Create a new unity project
2. Install recent shader graph and scriptable rendering pipeline packages
3. Create High Definition Rendering Pipeline Asset and Assign it in Settings->Graphics
4. Create a simple 3D sphere, material and PBR graph shader
5. Assign the shader to the material
6. Assign the material to the sphere
7. Open PBR graph shader and change surface type to Transparent in PBR Master node, save the shader.
8. Select sphere, In the Scene View, notice incorrect orange outline rendered as 6 rectangles.

Expected result: Outline is rendered around the sphere
Actual result: Outline rendered as 6 rectangles in the viewport

Reproducible with: 2019.1 2018.3.0a5, 2018.3.0b4, 2019.1.0a3
Could not reproduce with: 2017.4.0f1, 2017.4.12f1, 2018.1.9f2, 2018.2.11f1, 2018.3.0a1, 2018.3.0a4