Steps to reproduce:
1. Create a new project
2. Build and Run to the macOS Platform
3. After Player opens up keep it open
4. Go back to Unity Editor
5. Add Cube GameObject to the Scene and save it
6. Build and Run to the macOS Platform
Actual results: The first Player running in the background opens up instead of the second one
Expected results: Second Player opens up with added Cube
Reproducible with versions: 2021.3.40f1, 2022.3.38f1, 6000.0.10f1
Tested and reproduced on devices:
- MacBook Pro, 16-inch, 2021, Apple M1 Max, macOS: Ventura 14.5
- MacBook Pro, 15-inch, 2017, Radeon Pro 560 4 GB, Intel HD Graphics 630, 1536 MB. macOS: Ventura 13.5.2
Tested and not reproduced on device:
- Windows 11 Pro, Inte(R) Xeon(R) W-2145 CPU @ 3.70GHZ, version: 23H2
Notes:
- On Windows the first Player keeps running and on top of that second Player is opened, so they are running simultaneously