Texture displays visual artifacts and has a broken aspect ratio when it is imported in RGB 48-bit format

How to reproduce:
1. Open the “TextureImporter_FormatBug“
2. Select the “RetroSpaceship_48” texture in the Project window
3. Observe the preview of the texture, in the Inspector

Expected result: Texture displays no visual artifacts and sized correctly
Actual result: There are visual artifacts on the texture and it’s aspect ratio is distorted

Reproducible with: 2022.1.0a5, 2022.3.61f1, 6000.0.48f1, 6000.1.1f1, 6000.2.0a10

Reproducible on: Windows 10, Windows 11
Not reproducible on: no other environment tested