Summary

There is currently a bug with the Inspector/Drawers for editing Reference constant, variable, or collections of Vector4 and Quaternion where only a foldout is shown with no editable fields (tested on 2019.1.0f2).

I have resolved this drawing issue by adding some hardcoded checks to GenericPropertyDrawer (for layout and non-layout methods) to check for these types and show the appropriate controls and changing the BaseReferenceDrawer to use this helper class, but the work is based on PRs #57 and #65 so I would wait until those are merged prior to making another PR.

Before

Vector4Variable

QuaternionCollection

Example script with various references

After

Vector4Variable

QuaternionCollection

Example script with various references