How to reproduce:
1. Open the attached project “WireframeBug_11199“
2. Open the “SampleScene“ Scene (Assets/Scenes)
3. Select the “URP-Balanced-Renderer” asset (Assets/Settings/URP-Balanced-Renderer)
4. Change the “Rendering Path” option from “Deferred“ to “Forward“ in the Inspector
5. Change the Shading Mode to “Wireframe Shaded“ in Scene view
6. Observe the “SplineTest“ GameObject in Scene view

Expected result: The shaded wireframe is rendered correctly
Actual result: The shaded wireframe is rendered incorrectly (there is a triangle-shaped patch in the mesh where the shaded wireframe isn’t rendered)

Reproducible with: 14.0.3 (2022.2.0a16, 2022.2.0b2), 15.0.0 (2023.1.0a1, 2023.1.0a2)
Not reproducible with: 12.1.7 (2021.3.8f1), 13.1.8 (2022.1.13f1), 14.0.3 (2022.2.0a15, 2022.2.0b3, 2022.2.0b5), 15.0.0 (2023.1.0a3, 2023.1.0a6)
Can’t test with: 10.10.0 (2020.3.38f1) (Mesh is flat and pink)

Reproduced on: macOS (12.5)