Upgrading or fresh install of Odin Inspector in versions Above 2019.2.0b3 not compiling.
Assembly 'Assets/Plugins/Sirenix/Assemblies/Sirenix.Utilities.Editor.dll' will not be loaded due to errors:
Unable to resolve reference 'UnityEngine.UI'. Is the assembly missing or incompatible with the current platform?
Reference validation can be disabled in the Plugin Inspector.
Unity Version: 2019.2.0b3 , 2019.3.0a3, 2019.3.0a2, 2019.2.0b1
Odin Inspector: Latest available on Unity Asset Store
Install Odin Inspector in any of the versiones mencioned above