Packaging failed with disabled plugin

Disabling any plugin causes packaging failure.

No repro in 4.19

Also occurring when Disabling all platforms except for windows and changing configuration from development to shipping.

1. Create a New 4.20 or 4.21 project (Edit: New Blueprint Project)
2. Verify ability to package (File->Package Project)
3. Disable any plugin + Restart Editor
4. Package again

Result: 4.20 - no .exe in WindowsNoEditor folder

             4.21 - Error message:

"Missing UE4Game binary. You may have to build the UE4 project with your IDE. Alternatively, build using UnrealBuildTool with the commandline: UE4Game <Platform> <Configuration>"

Workaround: Enable any plugin (a different plugin then the one you originally disabled) - this will fix the project so that if this plugin is disabled packaging/exe creaton will succeed.