How to reproduce:

# Download both user-attached projects from (projectA.zip) file
# Download and build the Unity Editor for Linux and the LinuxPlayer from source
# Open “ProjectA“
# In the BuildSettings enable “Install into source code 'build' folder“ option and build and run the project
# Observe the text in the player window
# Close the player and project and open “ProjectB“
# Repeat steps 4 and 5

Expected results: the text in the second player window says “Project B“ which is different when compared with the previous project’s build

Actual results: the text in the second player window says “Project A“ which is the same as in the previous project’s build

Reproducible with: 2021.3.5f1

Could not test with: 2023.1.0a5 (no “Install into source code 'build' folder“ option in the BuildSettings window)

Reproducible on: Ubuntu 20.04