Textures don't have their FilterMode and WrapMode respected when changing the blending weight of post-process volume

Reproduction steps:
1. Open attached project "PPV2-TextureLerper-Repro"
2. Open Scenes/SampleScene
3. Select the "Post Processing" GameObject
4. In the "Post-process Volume" component change the Weight to any number below 1

Expected result: The static texture becomes less visible
Actual result: The static texture disappears

Reproducible with: 3.0.1 (2019.4.36f1, 2020.3.32f1), 3.2.1 (2019.4.36f1, 2020.3.32f1, 2021.2.17f1, 2022.1.0b13, 2022.2.0a8)