Unity Analytics does not send Custom Events when running application in batch mode

How to reproduce:
1. Open the user's attached "AnalyticsEvent.zip" project
2. Open the "SampleScene" Scene
3. Set-up Analytics Services (Edit -> Project Settings -> Analytics)
4. Build the project
5. Run the Build with -batchmode command line
6. Observe the Analytics Dashboard

Expected result: Custom Event is sent from a Build ran in batch mode
Actual result: Custom Event is not sent from a Build ran in batch mode

Reproducible with: 2018.4.22f1, 2019.4.22f1, 2020.3.0f1, 2021.1.0f1, 2021.2.0a10

Note:

• The issue is not reproducible in Play Mode and in Build ran normally