Reproduction steps:
1. Open Unity Hub
2. Go to Install > Install Editor > select a Unity version
3. Select the "Linux Build support (Mono)" and "Linux Dedicated Server Build Support" modules
4. After downloading the Editor, go to the Editor installation directory
5. Go to PlaybackEngines > LinuxStandaloneSupport > Variations > linux64_player_development_mono

Expected results: The folder is populated with a Data folder and many other files
Actual results: The folder only contains the Data folder and lacks the other files

Reproducible with: 3.2.0

Notes:
- Not reproducible on Linux or Windows
- Not reproducible with 2020.3 seemingly because it does not have a "Linux Dedicated Server Build Support" option when selecting modules
- The lack of files results in a Build error: "Error building Player: Currently selected scripting backend (Mono) is not installed"