VishwanathS_ghante Ya, Same issue with Nothing Phone 1 too.
As you can see in the picture, at the top of the screen where the taskbar is located, the AMOLED display shows a light greenish color, although the wallpaper is pure black. I believe that in the next update, Nothing will resolve this issue for the Nothing Phone 1, Phone 2, and Phone 2a, if the Phone 2a is experiencing the same problem.