Reproduction steps:
1. Open the attached project “GravityProject”
2. Open the scene “Assets/Scenes/Prototype 3.unity”
3. In the Hierarchy window, Select the “Player” GameObject
4. Observe the “Gravity Modifier” variable value in the attached Player Controller script component in the Inspector window
5. Enter Play Mode
6. On the Keyboard hit the Space key to jump and observe the character keeps moving up in the Game View

Expected result: The character jumps and returns to the ground
Actual result: The character keeps moving up in the Game View

Reproducible with: 2020.3.45f1, 2021.3.20f1, 2022.2.9f1, 2023.1.0b6, 2023.2.0a4

Reproducible on: Intel macOS 13.2.1