I override ClientServerBootstrap to only create the default world and this happens:
And the next one:
Unity 2019.3.0f4
“com.unity.burst”: “1.2.0-preview.11”,
“com.unity.entities”: “0.4.0-preview.10”,
“com.unity.mathematics”: “1.1.0”,
“com.unity.netcode”: “0.0.4-preview.0”,
“com.unity.physics”: “0.2.5-preview.1”,
Any idea?
Fixed: Restart Unity after upgrading Burst 
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