Does not reproduce on: 2022.3.59f1, 6000.1.0b9
Reproduces only on: 6000.0.41f1
Steps to reproduce:
1) Start a new HDRP sample scene
2) Select any material with a mask map assigned to it (Bamboo_A for example)
3) Expland material preview in the inspector
4) Observe broken exposure on the material's preview
Notes: Deleting mask map input fixes the issue as well as entering the playmode. However when compared to other editors, there's still a visual discrepancy – material preview is darker.