MARS package is not installed and "error CS0122: 'BasePopupField<SimulationEnvironmentField.Choice, SimulationEnvironmentField.Choice>.choices' is inaccessible due to its protection level" error appears when installing MARS package

How to reproduce:
1. Create a new project
2. Add a MARS package
3. Observe the Console window

Expected result: Mars package installed successfully
Actual result: Mars package is not installed and “error CS0122: 'BasePopupField<SimulationEnvironmentField.Choice, SimulationEnvironmentField.Choice>.choices' is inaccessible due to its protection level” errors appear

Reproducible with: 1.5.0 (2020.3.24f1)
Not reproducible with: 1.5.0 (2020.3.25f1, 2020.3.44f1, 2021.3.17f1, 2022.2.3f1, 2023.1.0a26)

Reproduced on: macOS 12.4 (Intel)

Note: There’s no MARS tab in the Project Settings window