Not possible to assign a Reference as data to a ContextDataUpdater

[Christian Oeing]

Report from forum (https://forum.unity.com/threads/released-data-bind-for-unity.298471/page-6#post-3800347):

in my previous project in Unity 2017 everything was working fine, but in my new project in Unity 2018.2.12.f1 in ContextDataUpdater when I select Reference it shows No Type and I am unable to link an object. Also in 2017 I am using 1.0.13 and in 2018 1.14. I checked the source code for drawers and it differs so I assume this is a reason. But can't be sure, didn't have time to investigate deeply.

[Christian Oeing]

The issue was that there was no type hint, so the EditorGUI.ObjectField method received a null reference as object type.

When no type hint is set, all references should be allowed.