How to reproduce:
1. Open project "Compression.zip"
2. Choose iOS as Build Target
3. In the Project window select "R" Texture
4. Observe the Texture in the Project window or Inspector window

Expected result: The Texture doesn't have black artifacts
Actual result: The Texture has black artifacts

Reproducible with: 2021.2.0a18, 2021.2.18f1, 2021.3.1f1, 2022.1.0b16, 2022.2.0a10
Not reproducible with: 2019.4.38f1, 2020.3.33f1, 2021.2.0a17

Notes:
- Black artifacts also are visible in the Scene and Game view when the Texture is on the GameObject
- With ASTC formats 8x8, 10x10,12x12 there are no black artifacts but the Texture is misaligned in some places
- Reproducible just with "Fast" Compressor Quality
- Reproducible with both Resize Algorithms "Mitchell" and "Bilinear"
- Not reproducible with Intel macs