How to reproduce:
1. Create a new project using the default 3D template
2. Import an FBX model
3. Drag the model into the Scene View
4. Duplicate the model (shortcut CMD+D)
5. Drag the duplicated model into the Scene View
6. Inspect the original and duplicated models

Expected result: Both models have properly mapped UVs and Textures and look the same
Actual result: Either the duplicated or both of the models have broken UV mapping

Reproducible with: 2020.3.10f1 (UV mapping break when the model is duplicated), 2020.3.11f1, 2020.3.13f1, 2021.1.13f1, 2021.2.0b1 (UV mapping breaks when the model is imported)
Not reproducible with: 2019.4.28f1, 2020.3.9f1

Notes:
- UV mapping is broken on both the imported model and the duplicated one when using Unity 2020.3.13f1, 2021.1.13f1, 2021.2.0b1
- Tested with FBX model exported from Cheetah3D
- Reimporting the model on 'not reproducible' versions fixed the issue when downgrading the project
- Reimporting the model on 'reproducible' versions introduces the issue when upgrading the project